Kemp was removed from Sunday's game against the Padres in the fourth inning and is undergoing tests to his chest area, Bobby Nightengale of The Cincinnati Enquirer reports.

EDGE Analysis

Kemp ran into the left field wall in the third inning, trying to catch a ball headed over the fence. He wanted to stay in the game, but manager David Bell determined that Kemp was in too much pain. If Kemp is out, Jesse Winker -- who replaced Kemp Sunday -- should have a chance for full-time at-bats.