Wrigley's walls are high, and it is pretty long down the lines as well. I believe at one point they had the longest foul lines in the majors. If they aren't still, I'd be surprised. It's odd how much of a "hitters park" Wrigley was when I was a kid. With all the new, smaller stadiums, Wrigley is now neutral or a slight pitcher's park, I'd guess. Wrigley is still a hitters park. Yes, but not extremely so. In the past few years, it has been as high as 2nd and as low as 15th in park factor (runs allowed). It is consistently outside the top 5 in HR allowed. Not that these things are very reliable. This year, the Marlins' stadium is surrendering more homers than Wrigley. The whole "Wrigley is a hitter's haven" thing is overblown. It is a hitter's park, but it is no band box.