WASHINGTON -- The Reds could be down another shortstop after Edgar Renteria left Tuesday's game vs. the Nationals with a strained left groin.

In the top of the seventh inning, Renteria drove an RBI double off of the wall in center field. As Fred Lewis came around to score, Renteria hobbled his way into second base.

"I did not feel a pop," Renteria said. "I felt it a little bit. Tomorrow we will see what happens."

Renteria was promptly lifted from the game and replaced by Paul Janish. The veteran shortstop will be evaluated again on Wednesday, the club said.

"The doctor said he had good strength in his groin, which is a good sign," Reds manager Dusty Baker said. "So we'll wait to see how sore he is tomorrow and make a determination then."

Cincinnati is already missing rookie shortstop Zack Cozart, who is out for the season after he underwent Tommy John surgery on his left elbow last week.

Renteria, who was 1-for-4 in Tuesday's game, is batting .245 with four home runs and 28 RBIs this season.