DiFelice entered the game in the eighth inning and Oeltjen was the first hitter he faced. Oeltjen's drive grazed DiFelice's right hand and continued into center field for a base hit.
Manager Ron Roenicke reported after the game that DiFelice suffered contusions on the third and fourth knuckles of his right hand.
DiFelice was making his seventh Cactus League appearance, and has compiled a 3.18 ERA over 5 2/3 innings. He missed all of 2010 while recovering from a shoulder strain, and is 5-1 with a 3.44 ERA in 74 big league appearances, all for the Brewers, in '08 and '09.