Barry Bonds has hit the most home runs at Rangers Ballpark in Arlington
Craig Gentry on 9/23/2011 at the Ballpark in Arlington against the Seattle Mariners.
Darryl Strawberry of the New York Yankees hit a 465 foot home run on June 17, 1998. The ball hit off of the batter's eye wall beyond the centerfield fence. As of June 2012 it still ranks as the longest homer in the ballpark's history.
Ronnie Green of the KC Royals hit the longest home run at Fenway Park in 1987
Albert Pujols hit the longest home run out of Busch stadium in 2011. The home run was 465 feet.
493' in Skydome
The player who hit the verifiable longest home run is Mickey Mantle. i believe it was around 634 feet. Mickey Mantle hit the home run on September 10,1960.