Tagged: Minute Maid Park

On Home Run Suppression at Minute Maid Park

Because I live in Los Angeles, California, I spend a lot of time during the baseball season at Dodger Stadium. An interesting thing happens at Dodger Stadium that doesn’t happen at any other Major League ballpark. Well, a lot of things happen at Dodger Stadium that don’t happen at any other Major League ballpark. For instance, attempted homicide in the parking lot.

But what I’m referring to in this entry is that every time a fly ball is hit in Dodger Stadium, everyone stands up and cranes their neck to watch the ball’s flight. Well, not everyone. 40% of the Dodger Stadium crowd is, at any given point during a game, fixated on one of three hundred beach balls being batted around the stadium (they are not all fixated on this because they enjoy it; it’s also a legitimate safety concern for fans of visiting teams. I’ve been the victim of attempted beach ball assault on more than one occasion). But of the remaining 60%, a very large number stand up to watch every fly ball.

Bet everyone wish they'd sat down for this one.

Bet everyone wish they’d sat down for this one.

Every fly ball. It could be a pop-up to the catcher behind the plate. People will stand up. It could be a long, graceful foul ball that lands somewhere near Vin Scully. People will stand up. It could be a high, looping fly-out to the shortstop. People will stand up. People will stand up because in a city like Los Angeles, at any given time, there are fifty-seven things more interesting than watching the Dodgers. But even in a city like Los Angeles, home runs are one thing people understand and want to see.

What makes this behavior particularly odd is that fly balls don’t generally turn into home runs at Dodger Stadium. In 2012, 1.56 home runs per game were hit in Dodger Stadium. That’s the sixth-least of any stadium in Major League Baseball. In fact, every year since 2006 – when the ESPN Home Run Tracker was created – Dodger Stadium has been ranked as one of the top ten home run-suppressing stadiums in baseball.

Minute Maid Park, of course, has the opposite reputation. It’s known as a hitter-friendly park. One that encourages home runs. At least, that’s the reputation.

But in looking at the Home Run Tracker, something interesting pops up. Though it’s true that from 2006 – 2008, Minute Maid Park ranked among the top ten parks in home run rate, since then it has normalized, and in fact it’s currently listed as a fairly neutral park. In fact, the hitter’s advantage that MMP has been known for since its inaugural season of 2000 may not be such an advantage, after all.

Minute Maid Park Park Factors By Year (Batting)

Season Park Factor
2000 107
2001 106
2002 106
2003 103
2004 101
2005 101
2006 100
2007 100
2008 97
2009 98
2010 97
2011 98
2012 99

After four seasons, Minute Maid Park stabilized and has been more or less a neutral park ever since. But whatever the offensive environment in Minute Maid Park, it’s been more or less understood that it allows more home runs – and fewer beach balls – than Dodger Stadium. Since 2006, an average of .43 fewer home runs a game per season. Over 81 home games, that’s almost 35 fewer home runs per season.

Which makes it even more puzzling what happened in 2010. In 2010, Minute Maid Park allowed just 1.59 home runs per game. Dodger Stadium allowed 1.62. One’s first instinct is to write this off as a bad offensive team, which isn’t entirely untrue, but remember that this covers visiting teams, as well. And as you can see, visiting teams didn’t exactly knock the ball out of Minute Maid Park, either (I include the Astros’ road splits for context):

Year Home SLG Road SLG Visitors SLG
2008 .443 .389 .437
2009 .418 .383 .424
2010 .375 .349 .380
2011 .384 .364 .440
2012 .385 .358 .396

Astros’ hitters lost 43 points of SLG from 2009-2010 at Minute Maid Park, compared to 34 on the road. But visiting hitters lost 44 points themselves, only to completely rebound the following season.

A look at GB/FB rates doesn’t provide any answers:

Year GB/FB Home GB/FB Visitors GB/FB
2008 1.31 1.42 1.16
2009 1.40 1.31 1.33
2010 1.36 1.34 1.22
2011 1.35 1.31 1.11
2012 1.36 1.42 1.53

Looking at home runs per fly ball yields some interesting results, however.

Year HR/FB Home HR/FB Visitors HR/FB
2008 10.9% 12.4% 12.3%
2009 9.4% 6.1% 11.1%
2010 7.0% 8.2% 8.4%
2011 6.4% 6.1% 12.7%
2012 10.8% 12.4% 11.1%

The Astros’ HR/FB rates tumbled in 2010 – down 2.4% from 2009 overall, but actually up almost 2% at home. Conversely, however, visitors in Minute Maid Park only saw 8.4% of their fly balls leave the yard – a 2.7% reduction.

So what happened in 2010 that kept fly balls from leaving the stadium, for both the visitors and for the home team? I don’t see any evidence of a physical change that the stadium encountered that would have resulted in this.

This happened slightly less often in Minute Maid Park in 2010.

This happened slightly less often in Minute Maid Park in 2010.

One possible theory I can come up with is that Prince Fielder – who crushed the ball in Minute Maid Park – had a down year in 2010. Fielder slugged just .200 in Minute Maid Park in that season, far down from his career .627 (not a typo) slugging percentage there. Is it possible that his power slump in Houston was able to change the run environment that much? It seems unlikely. But something happened that year.

The Thirty Greatest Astros of the Minute Maid Park Era

Minute Maid Park is now over a decade old, but when it opened, it signaled a very obvious change for the Houston Astros organization.  Gone were the pitching-friendly confines of the Astrodome, and in their place was a new park with a reputation (deserved or otherwise) as a hitter’s paradise.

On Opening Day, 2000, the ceremonial first pitch was thrown by Kenneth Lay (oops) to open what was then known as Enron Field, now Minute Maid Park.  Since then until the end of last season, no fewer than 97 position players and 124 have donned a Houston Astros uniform. 

The Astros have been through a lot during that period – 4th place in their division in 2000, and then starting a string of success that would culminate in the 2005 National League pennant, followed by a sharp and dramatic decline. 

As we step forward into a new era – one in which no single player who saw that ceremonial first pitch is still an active player for the Astros – I got the idea to look back and answer a very basic question: “Which Astros have been the best players during the Minute Maid Park era?”

For this, I looked at a number of stats, mostly WAR, only factoring in seasons in which the Astros called MMP (or Enron Field) home.  Most of the players were chosen for their total team value, though some were given the nod for big contributions over the course of just a few seasons.  A twenty-five player roster proved to make some decisions much too difficult, so I expanded it to 30.

What this is not is a look at the best hitters in Minute Maid Park.  No attention was paid to home-road splits, although I may revisit that idea down the road.  Also, I used B-R’s WAR, which sometimes varies wildly from FanGraphs’ WAR.  It is what it is.

The largest single-season WAR for any position player was posted by Lance Berkman in 2008, and the largest single-season WAR for a pitcher was the 7.2 that Roger Clemens put up in 2005.  In fact, not surprisingly, it was the pitching that year that propelled Houston into the playoffs.  Of the top five single seasons ever put together by an Astros pitcher in the Minute Maid Park era, 3 of them came that year: #1 Roger Clemens (7.2), #3 Andy Pettitte (5.8), and #5 Roy Oswalt (5.3).  Only one position player from that season, Morgan Ensberg (third at 6.5), had a season in the top ten of all-time seasons by an Astros position player in the MMP era. 

So without further delay, I present to you the 30 Greatest Astros of the Minute Maid Park era:

Starting Pitchers

1. Roy Oswalt.  Of the ten best pitching seasons in the Minute Maid Park era, Oswalt has four (2002, 2005, 2006, and 2007).  He’s far and away the leader in overall WAR, owing largely to the fact that his 291 starts dwarfs any other pitcher – Wandy Rodriguez has the second-most, with 167.  Oswalt came up with the Astros in 2001, and played his entire Astros career in the MMP era.  With 5 Cy Young top-five finishes, 3 All-Star appearances, 4 appearances in the Top 25 of MVP voting, and a Rookie of the Year runner-up, he’s easily the most-decorated pitcher of the era.  But it wasn’t just longevity that aided Oswalt.  His 4.2 WAR-per-season as a pitcher is second in the MMP era only to…

2. Roger Clemens.  Clemens was already a six-time Cy Young Award winner by the time he needled (see what I did there?) his way into Houston in 2004 to begin a three-year stretch of dominance that saw him win one more Cy Young, a second top three finish in the voting, two All-Star appearances, and two MVP top-25 selections.  He also threw at his son, Koby Clemens, who had earlier homered off of him in an exhibition game. I mean, I’m just saying that that happened.

3. Wade Miller.  When Miller’s name is mentioned around Astros fans, it usually takes them a moment or two to remember who he was, but he did post double-digit wins three years in a row (2001-03).  Unfortunately for him, the World Series year of 2005 was his first away from the club.  If one includes the 10.1 innings he pitched during the Astrodome era, Miller was 58-39 as an Astro, with a 3.87 ERA, 117 ERA+, 1.309 WHIP, 7.7 K/9, and 2.15 K/BB.  He also struck out 6 Braves in 7 innings in his only playoff appearance, Game 1 of the 2001 NLDS. 

4. Andy Pettitte.  Astros fans can be forgiven for thinking of Pettitte and Clemens as one in the same.  The strong lefty-righty combo came into town – and left town – at the same time, from the same New York Yankees, and back to those same New York Yankees.  Pettitte’s 7.5 WAR over that time pales in comparison to the other three names on the list, but he did finish fifth in the Cy Young voting in 2005 and helped propel the team to their first World Series appearance.  Pettitte also left town with a cool 1.230 WHIP and more than three strikeouts to every walk he issued as an Astro in the MMP era.

5. Wandy Rodriguez.  At first glance, Rodriguez’s place on this list seems to owe itself more to the fact that he’s the longest-tenured current Astros pitcher of the MMP era, and there is some merit to that.  His 167 starts is second among Astros pitchers during this time.  But his 1.3 WAR-per-season isn’t bad – the only pitchers not on this list who can match it are Shane Reynolds (1.3) and Chris Holt (1.9).  Wandy’s been successful as an Astro largely by keeping the ball in the park – he’s allowed just 1.0 home runs per 9.0 innings pitched since coming up in 2005, and his WHIP has been on a downward trend ever since the career-high 1.60 he posted as a sophomore.  Rodriguez has also posted three seasons (2008, 2009, 2010) with an ERA+ above 100, and has had three double-digit win totals: His rookie campaign in 2005, 2009, and 2010.

6. Brett Myers.  Myers may look out of place on this list, as he’s only had one full season as an Astros pitcher, but that season ranks among the best all-time in the MMP era.  His 4.7 WAR-per-season is second only to Clemens’ 5.1, outpacing even Oswalt’s 4.2.  In his lone season as an Astro, Myers finished 10th in the Cy Young balloting and posted a career-high 123 ERA+. 

Relief Pitchers

1. Octavio Dotel.  There aren’t a whole lot of surprises on this list, but the first might be seeing Dotel ranked above closer extraordinaire Billy Wagner.  A case could be made for either of the last two in the once-vaunted Lidge-Dotel-Wagner trio that was once used to mop up opponents during the early years of the MMP era, but Dotel wins on tenure.  His 10.6 WAR over the course of 5 seasons as an Astro during this period is the best for any reliever, and his insanely-good 3.05 K/BB ratio (which does include 85.1 IP during the Astrodome era) is pretty impressive, too.

2. Billy Wagner.  When the hard-throwing lefty came up in 1995, he captured Astros nation and held it for nine seasons, five of which came in the MMP era.  The final year of the Astrodome era was his best and earned him 4th place in the Cy Young balloting, but he pitched well even in the new ballpark.  In fact, it was his final year in Houston, 2003, that saw him post his career-high 44 saves, and he earned 2 of his 3 All-Star Game appearances as an Astro in the MMP era.

3. Brad Lidge. It’s easy enough, after watching Brad Lidge struggle through the end of his tenure as a Houston Astro, to forget how dominant he could be.  But from his first full season in 2003 through the World Series year of 2005, he owned opposing hitters, striking out more than 3.75 batters for every one he walked, posting a 1.078 WHIP, and putting together a string of devastating ERA+: 122 in 2003, 230 in 2004, and 185 in 2005.  He finished 5th in the Rookie of the Year balloting in 2003, 8th in the Cy Young voting in 2004, and earned an All-Star nod in 20
05.

4. Chad Qualls. Qualls was never quite as flashy as Lidge, Dotel, or Wagner, but he did post consistently-high ERA+ during his tenure as an Astro in the MMP era: 124 (2004), 130 (2005), 119 (2006), and 146 (2007).  During these four seasons, he posted a 1.236 WHIP, 6 saves, and 23 wins out of the bullpen.

5. Dan Wheeler. Wheeler has never enjoyed greater success as a pitcher than he did during the 3+ seasons he spent as an Astro during the MMP era, an era during which he posted an amazing 1.088 WHIP and a 145 ERA+ over 268.2 innings.  The 3.9 WAR he posted over the course of that time is incredible for a middle reliever, which he’s been for the overwhelming majority of his career.

6. Jose Valverde.  Antics aside, Valverde proved a useful commodity in the retooling years of 2008 and 2009, with a 3.3 WAR and a 1.159 WHIP.  He struck out 3.16 batters for every walk he issued, and 9.9 for every nine innings he pitched as an Astro – a full 139 of the 552 batters he faced (over 25%). 

7. LaTroy Hawkins.  Hawkins is much-maligned around certain (ahem, Cubs) circles, largely because he always seemed like a setup man who could never really step up and become a full-time closer.  That may well be true, but he pitched well during his Astros tenure, from midway through 2008 through 2009.  He held down a 1.71 ERA during those two years, and an amazing 244 ERA+.  Like Rodriguez, he was a guy who kept the ball in the park, allowing just 0.7 HR/9, with a 1.091 WHIP.  His 3.3 WAR for less than two full seasons is pretty remarkable for a middle reliever.

8. Brandon Lyon.  Though Lyon has pitched just one full season in Houston, 2010, his 2.0 WAR in that single season ranks among the best single-season WAR for any Astros reliever during the MMP era.  Never truly dominant, he did post a 125 ERA+ and allowed just 0.2 HR/9.

9. Dan Miceli.  A case could be made for lefty Tim Byrdak, but Miceli gets the nod for his 1.6 WAR in 2004 and parts of 2003, which saw him pitch for 4 major league teams.  His 375 ERA+ over the course of the 30.0 innings he pitched as an Astro that year reek of bad sample size, but striking out 3.03 batters for every walk issued is a pretty solid argument, as well.

Catchers

1. Brad Ausmus.  Ausmus wins on playing time alone.  Sure, he posted a 2.8 WAR as an Astro during the MMP era, his second stint with the team, but it took from 2001-2008 for him to do it.  He also won three Gold Gloves during this time, and much of his value came on defense, unlike:

2. Mitch Meluskey.  Meluskey took to Minute Maid Park like a pig to mud, ranking fifth in Rookie of the Year balloting during the park’s inaugural season, after which he departed, only to return in 2003 to much more dismal numbers.  That rookie season alone was enough to win the hot-headed backstop a spot on a thin roster of Astros catchers.  Despite losing 0.5 wins to his poor defense, he made up for it at the plate, where he hit .300/.401/.487.

Infielders

1B Lance Berkman.  Since getting 6th place in the Rookie of the Year balloting in MMP’s inaugural 2000 season, Berkman has been a mainstay, first as a corner outfielder (plus who remembers his 1,292.1 innings as a center fielder over parts of five seasons?) and then as a first baseman.  With five top five finishes in the MVP balloting and five All-Star selections, the switch-hitter has been nearly-synonymous with the MMP era, picking up where legends like Jeff Bagwell and Craig Biggio left off, as one more Killer B.  His 46.1 WAR over this time dwarfs any other player.  Of course, as we all learned last night, he isn’t any less deadly in MMP as an opposing hitter, either.

2B Craig Biggio.  The consummate team player, Biggio changed positions with some regularity.  After coming up in 1998 as a catcher, he moved to second base, later to the outfield to make room for Jeff Kent, and then back to second base.  In my mind, he will always be a second baseman, a position he defined for the Astros over the course of 17,154.2 innings at the position.  His finest days may have been behind him once the move was made to MMP, but he never took a pitch off, amassing 10.9 WAR from 2000-2007.

3B Morgan Ensberg.  Though Ensberg played in MMP’s inaugural 2000 year, he didn’t work his way into being a full-time starter until three years later.  In parts of seven seasons, though, he put together a .266/.367/.475 line, including the 2005 season which saw him finish 4th in MVP voting, earn his only All-Star selection, and win a Silver Slugger award en route to leading the Astros offense that won the NL pennant.

SS Adam Everett.  Everett is another player whose value came mostly from having a longer tenure than anyone else at his position during the MMP era, but he also provided 6.9 WAR over 7 seasons as a defender alone. 

Outfielders

LF Moises Alou.  Alou was already well-traveled, having played for Pittsburgh, Montreal, and Florida before he landed in Houston in 1998 with a campaign that saw him earn an All-Star nod, a Silver Slugger award, and third in the MVP voting.  It wasn’t until he resurfaced with the team in  2000 and 2001, though, that he got to be a part of the MMP era.  And during his time in Houston, he made his mark on that period with two more MVP top-twenty finishes and another All-Star nod before departing for Chicago to blame fans for interfering with balls he would never have caught in a million years.

CF Richard Hidalgo.  Fans may have trouble remembering Hidalgo, who played for the Astros in parts of 8 seasons, including 2000-2004 in the MMP era.  Certainly, Mets and Rangers fans would have liked to have seen him continue the .278/.356/.501 line he put up during his tenure as an Astro, or the 17.4 WAR he accumulated, all but 3.3 of which came during the MMP era.

RF Hunter Pence.  It’s difficult not to think of Pence, now a team leader in his fifth season with the club, as the goofy 24-year-old that surfaced in 2007 with a rookie campaign that earned him third in the ROY voting.  He boasts a 6.6 WAR over that time, despite losing 1.1  wins on the defensive side of the ball (all in 2010), which actually ranks him third after Berkman and Hidalgo among players who have manned right field for the Astros in the MMP era. 

Bench

1B Jeff Bagwell.  Bagwell played five full seasons, and part of a sixth, during the MMP era, and though he might not have been the force he’d been earlier in his career, he did amass three seasons (2000, 2001, and 2003) with numbers good enough to finish in the top 15 of MVP voting, including a 1.039 OPS in 2000.  From 2000-2003, he posted four consecutive seasons with an oWAR over 3.5, and all told, he added over 20 wins from 2000-2005.

2B Jeff Kent.  One of two future All-Stars to man the second sack for the Astros in the MMP era, Kent had already solidified his career in Toronto, New York, Cleveland, and San Francisco by the time he landed in Houston from 2003-2004, where he posted a .293/.350/.521 line and 5.9 WAR.

3B Ken Caminiti.  Caminiti had already spent 8 years in Houston during the Astrodome era before parting for San Diego in 1995, but he would return in 1999 and play his final year for the Astros in 2000, the inaugural year of MMP.  The 1.5 WAR he posted that season was far from the best of his career, even of his Astros career, but the fading slugger did well enough that year to warrant a spot on the thirty best.

UTIL Ty Wigginton.  After the Rays dealt Wigginton to the Astros in 2007 for Wheeler, he put together probably the best stretch of his career, going .285/.347/.506 in 161 games, split between third base, first base, and both corner outfiel
d spots.  The 2.8 WAR he put together in such a short time is the best of any team he’s played for.

OF Michael Bourn.  Bourn’s still got a lot of holes in his game, but the All-Star and two-time Gold Glove winner has amassed 7.1 WAR over the last two seasons, after a disastrous first year which saw him give away 2.1.  He led the league in dWAR, Total Zone Runs, and Stolen Bases in 2010, and seems to be maturing before our very eyes. 

OF Carlos Beltran.  Beltran played just 90 games for the Houston Astros after a midseason three-team trade that saw John Buck go to the Royals and Octavio Dotel to the Athletics, but he made his time here count, putting together 3.5 WAR and leading the charge deep into the playoffs, where he posted an OPS over 1.5.  Only Lance Berkman has carried this team on his back better than Beltran did in the second half of 2004 during the MMP era.