Chase Utley's immediate future as a third baseman also remains to be seen.
"We'll see," Phillies manager Charlie Manuel said before Tuesday's game against the Nationals at Citizens Bank Park.
The Phillies have nine games remaining, and they indicated last week if Utley feels comfortable and they are eliminated from postseason contention, he could play at third base before the end of the season. The Phillies entered Tuesday five games behind the Cardinals for the second National League Wild Card. Even if the Phillies finished 9-0, the Cardinals would need to finish no better than 2-7 to tie.
Elimination could come quickly.
"I feel like we've got time if we want to try Chase over there," Manuel said.