I found that the quickest way to earn this trophy was in Retro mode by playing on beginner hitting difficulty against a Double-A team. I choose to be the visitor so that I was first to bat. I suggest reordering your lineup so that your fastest players are at the top of the batting order. You just need to hit the ball into one of the outfield gaps toward the bullpen area. If you don't get the trophy in the first inning, just restart that game and so you can hit again right away.