May
18
2009

Why are so many home runs being hit at new Yankee Stadium?

House of home runs: Home runs have been soaring out of new Yankee Stadium at a record clip. Is there any science behind the factors causing that to happen?
House of home runs: Home runs have been soaring out of new Yankee Stadium at a record clip. Is there any science behind the factors causing that to happen?Courtesy The Silent Wind of Doom
I wish I would have come across this information a week earlier. I could have passed it along to Twins manager Ron Gardenhire and maybe helped the squad avert the disaster it ran into this weekend in the Bronx.

National Public Radio devoted a half hour to discussing the scientific and statistical factors that might be at play in the increased number of home runs being hit at the new New York Yankee Stadium. As any Twins fan can tell you, the homes kept flying out of the park this weekend when the Twins visited the new stadium, resulting in three-straight Twins losses. Most puzzling about this increased number of homers is that the interior dimensions of the playing field were planned to be exactly like the old Yankee Stadium.

You can hear the stadium discussion here. If you don't have audio capability on your computer, I'll quickly summarize the gist of the discussion.

First, the numbers. This report was done on May 15. Up to that point, there had been 47 home runs hit in the new ball park compared to 24 homers in the same number of games played at the start of last season in the old park. This year's average is a whopping 3.6 homers per game.

A wind studies specialist points out that the alignment of the new stadium is slightly different than the old stadium. In the new park, home plate to right field is directly set up west to east. The old park was shifted about 20 degrees in a northwest to southeast orientation. And predominant winds in the area go west to east.

Another wind factor is that the new stadium is shallower from top to field than the old one. That means less deflection or impeding the wind flow into the new stadium than the old one.

And while the posted outfield wall dimensions of the new stadium are identical to the old park, there is a difference in right field. There, the once concave outfield wall is now straight to accommodate a new out-of-town games scoreboard. Six home runs hit this year landed in areas behind this new scoreboard that would have been in the park in old Yankee Stadium.

A sports writer from ESPN on the show also points out that the sample of games to draw any conclusions from right now is just too small. It's standard practice to figure in three full seasons (243 games) to come up with an "even" reading of what's normal for a ballpark, he notes. The 13 games played so far amount to just 5% of that reading.

Two line-up considerations for the Yankees. They've had a couple starting pitchers struggle early this season an injuries to position players have made their line-up be predominantly left-handers, who tend to hit the ball to right field more than right-handers. This year's baseballs might be flying farther in general, too, he said. Home run production is up all across the major leagues so far this season.

So why do you think more home runs are being hit more often in Yankee Stadium? Share your thoughts here with other Buzz readers. I know for me, it gives me one more great reason to hate the Yankees.

Your Comments, Thoughts, Questions, Ideas

mdr's picture
mdr says:

Maybe the magical science of steroids is a factor - at least for the Yankees.

posted on Tue, 05/19/2009 - 8:21am
Thor's picture
Thor says:

But most of their juiced up guys were playing in old Yankee Stadium, too.

posted on Tue, 05/19/2009 - 10:56am
mdr's picture
mdr says:

Why do you insist on complicating my theory with facts?

posted on Tue, 05/19/2009 - 11:56am
Thor's picture
Thor says:

Gene – my Yoda – well has taught me.

posted on Tue, 05/19/2009 - 12:01pm
Gene's picture
Gene says:

Flattery everywhere get you will.

I agree with the writer who says the sample is just too small. Every year, some players jump out to a strong start. But the season is long, and hot streaks and cold spells have a way of averaging out. As I type this, the season is about 1/4 done. There are ten players on a pace to hit 50 home runs. By the end of the year, it's unlikely we'll have more than one or two. Similarly, 59 players are 1/4 of the way to 100 RBIs. 26 are 1/4 of the way to 200 hits. Check back in October, and you'll find those numbers slashed by half, maybe more.

posted on Fri, 05/22/2009 - 6:41pm
Anonymous's picture
Anonymous says:

theres no steroid use on the yankees its not possible because they would have been investigated dont take away from the skill that these players have im sure none of you could get up and do what they do every day

posted on Wed, 05/27/2009 - 10:12am
mdr's picture
mdr says:

Not without steroids, I couldn't.

posted on Wed, 05/27/2009 - 10:44am
jeffb's picture
jeffb says:

It sounds to me like we got just your typical, bitter, non-Yankees fans........... "I hate the Yankees because there good, so im gonna huh......bitch n moan....huh......about......STEROIDS........and.......The Yankees cheating......yeah....the wind...and......payroll.....and the huh....global warming and the ummmm......flux capacitor!!" Get over it!! It is what it is.........Deal with it!! GO YANKS!!

posted on Mon, 06/01/2009 - 6:45am
Thor's picture
Thor says:

Here's more home run info at the New Yankee Stadium from USA Today (including a great headline: Homers Odyessy) along with the exact opposite effect happening at the new New York Mets stadium. I hope the Twins are thinking about this in regard to Mauer and Morneau as they put the finishing touches on Target Field, which opens next season.

posted on Tue, 06/02/2009 - 4:17pm
Anonymous's picture
Anonymous says:

yankees stadium has so many home runs being hit because the old stadium isnt fully demolished yet and it is right across the street so it blocks some of the wind that would make the ball die out in right field

posted on Mon, 06/15/2009 - 11:00am
lilKobe's picture
lilKobe says:

I think that its because everyone who plays there is so excited to be apart of history

posted on Wed, 06/17/2009 - 1:04pm

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