Per the ootp 13 manual:
Ballpark dimensions are purely cosmetic! It's the ballpark factors that actually influence the game engine. That is, making a ballpark with a 500-foot center field won't make it any harder to hit home runs to center if the home run factors are still 1.000.
Note: In play-by-play calls, home run distances are based on the distances set here. So, if you set your dimensions to something silly like 700 feet, you will see some 720-foot home runs!
So Cole could hit a 700-ft HR