ooked at batted ball data to see if we could quantify a Marine Air effect at Safeco Field. Ther..."/> ooked at batted ball data to see if we could quantify a Marine Air effect at Safeco Field. Ther..."/>

Batted Ball Differences in Colorado and Texas-Off the Radar

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Mandatory Credit: Chris Humphreys-USA TODAY Sports

Elsewhere, I’ve looked at batted ball data to see if we could quantify a Marine Air effect at Safeco Field. There didn’t seem to enough evidence to posit that average battled ball distance was really that different in Seattle. With this evidence, I was interested in whether or not we can see a difference in the batted ball rates at the two most extreme offensive parks in baseball, Coors Field and the Ballpark in Arlington. So first I looked at the average batted ball distances on non-bunts according to Baseball Heat Maps for players that have played on both the Rockies and another team since 2007 (the start of the Pitch F/X era). I didn’t use a hard cutoff, but I usually didn’t include hitters that had less than 200 plate appearances as both a Rockie and a non-Rockie, and usually used about 50 innings as a minimum for pitchers. Then, I did the same for Rangers players.

Rockies:

PlayerAs a RockieBefore RockieAfter Rockie
Chris Iannetta276.401264.335
Clint Barmes260.84244.052
Matt Holliday280.076273.604
Willy Taveras243.497239.084
Brad Hawpe278.23272.976
Jeff Baker283.061258.093
Ian Stewart247.516257.432
Yorvit Torrealba269.389251.626
Omar Quintanilla260.372260.034
Scott Podsednik245.55258.939248.442
Seth Smith274.643270.695
Cory Sullivan259.87262.215
Jason Giambi276.598268.831
Miguel Olivo267.463263.065254.046
Carlos Gonzalez273.472258.03
Melvin Mora263.693259.799
Mark Ellis254.06253.245253.905
Ty Wiggington270.55265.854259.691
Marco Scutaro254.697252.864
Michael Cuddyer272.935264.774
Tyler Colvin263.203272.473
Average265.53261.79258.02

Hitters hit the ball a few feet farther when they played for the Rockies than when they played with other teams. The difference between pitchers was even more dramatic, as pitchers were much worse (when it came to batted ball distance) when they played for the Rockies.

Just as a case study, I looked at Dexter Fowler’s 2012 and broke down his batted ball distance by series, and denoted whether or not the series was at home or the road. The method is a little crude, but it should be helpful. Fowler is interesting because while others teams have expressed interest in him, he has extremely large home/road splits. This exercise may help us see if the ball is travelling farther at home, and thus inflating up his numbers.

DateHome/RoadBall Distance
9/11-9/12H183.054
8/27-9/2H246.526
8/13-8/19H228.171
7/27-8/5H264.934
7/13-7/18H235.748
6/25-7/1H284.724
6/8-6/14H261.367
5/28-6-3H276.535
5/16-5/20H287.473
4/27-5/6H267.565
4/9-4/18H306.033
9/21-9/22H265.432
9/14-9/19R269.859
9/3-9/9R242
8/20-8/26R190.952
8/6-8/12R228.873
7/20-7/25R268.568
7/2-7/8R237.796
6/15-6/24R243.995
6/4-6/6R267.788
5/21-5/27R303.781
5/7-5/15R247.665
4/20-4/25R254.955
4/6-4/8R225.125

Fowler’s average batted ball distance is 258.96 feet at home, and 248.45 feet on the road. Of course, positive home/road splits can be explained by the hitter just feeling more comfortable at home (that is, philosophically, he could just be hitting the ball a little harder at home), but with the Coors effect seemingly real, it is hard to not take note of this and speculate that Fowler would be a much weaker hitter if he didn’t get to play 81 games at Coors field (when you compare him with other hitters, you notice that 248 feet per batted ball is not very good).

Rangers:

NameAs a RangerBefore TexasAfter Texas
Vicente Padilla256.031261.621
Kevin Millwood258.189254.553
C.J. Wilson255.22255.019
Jamey Wright249.141248.827
Frank Francisco262.89248.564
Dustin Nippert261.185262.765
Luis Mendoza257.626257.983
Joaquin Benoit265.438258.233
Kameron Loe262.45263.042
Jason Jennings262.51262.587
Brandon McCarthy259.592256.535
Tommy Hunter267.344264.314
Rob Tejada262.637252.904
Darren O’Day256.274245.778266.295
Cliff Lee259.952257.201257.123
Rich Harden256.208258.893259.327
Darren Oliver248.129253.911240.931
Mark Lowe255.926259.393
Mike Adams245.184265.398
Koji Uehara258.447270.503
Ryan Dempster262.105259.985
Joe Nathan253.394262.242
Roy Oswalt242.72255.997
Averages257.33259.55256.35

The Case Study for the Ballpark in Arlington I used was Derek Holland’s 2012. Holland has extremely large home/road splits, and is much worse at home than he is on the road.

DateParkFIPxFIPAverage Batted Ball Distance
5/10/12Baltimore2.434.39250.769
4/18/12Boston4.244.27260.818
5/5/12Cleveland2.693.29187.703
9/2/12Cleveland4.093.08273.377
5/19/12Houston9.693.66282.314
8/5/12Kansas City6.093.47279.039
7/20/12LA7.445.53261.378
9/19/12LA4.244.48290.91
8/16/12New York4.333.85263.735
6/5/12Oakland8.345.67249.573
10/3/12Oakland5.347.55215.557
7/13/12Seattle2.834.75251.524
9/7/12Tampa2.722.56259.32
4/7/12Texas2.934.64272.254
4/12/12Texas2.692.51296.329
4/23/12Texas6.936.96277.271
4/29/12Texas1.674.18281.919
5/14/12Texas3.094.56225.702
5/25/12Texas2.822.65230.037
5/30/12Texas19.898.7226.236
7/7/12Texas4.934.72253.104
7/25/12Texas5.443.2307.583
7/31/12Texas9.245.6269.424
8/11/12Texas2.832.29275.762
8/22/12Texas2.524.2283.765
8/27/12Texas4.595.12263.949
9/13/12Texas3.812.79224.756
9/24/12Texas11.094.39292.398
9/30/12Texas6.394.7259.513

We see that Holland’s average batted ball distance at home in Texas is 265 feet, and on the road it is 255.85, which is about as dramatic as we saw with Dexter Fowler. This explains why his FIP (which weights home runs) has a bigger difference between home and road than his xFIP (which does not weight home runs literally, but only on fly-ball rates). It seems that this evidence makes it clear that while dimensions may play a role in Texas, the “jet stream affect” is real, and does help hitters. However, when we looked at all the players without breaking it down into Home/Road splits, we didn’t see the effect we expected. This seems to be because of the success of Joe Nathan, Koji Uehara, and Mike Adams with Texas. When we look at hitters, we see more of what we would expect, with a relatively (2 to 6 feet per batted ball) large difference in the average amount of feet per batted ball.

Conclusion

So we kind of saw what I expected. Coors Field seemed to show a legitimate difference in batted ball difference, something that we could probably attribute to the altitude allowing the ball to fly more (just like football kickers are usually better in Denver). The difference was real, especially when we broke down Fowler’s season. Derek Holland’s difference was just as real, but the overall data was less conclusive than Colorado’s. Since Denver is a more extreme environment, this was to be expected.