Jun 09, 2010; Phoenix, AZ, USA; Atlanta Braves centerfielder Nate McLouth (right) is escorted off the field by trainer Jeff Porter after he collided with right fielder Jason Heyward (not pictured) while chasing a fly ball in the eighth inning against the Arizona Diamondbacks at Chase Field. The collision resulted in an inside the park home run for Diamondbacks batter Gerardo Parra (not pictured).; Mandatory Credit: Mark J. Rebilas