With Carlos Zambrano out indefinitely while the Cubs try to figure out what's wrong with his sore right arm, Sean Marshall will take over that spot in the rotation beginning Sunday in Cincinnati.
"Until we get the results from this MRI (on Zambrano), we've got Marshall in the rotation and we'll go from there," manager Lou Piniella said. "I've got all the confidence in the world that Marshall can pitch well for us.
"Last year he pitched down the stretch for us in September and I thought he pitched quite well. In the games that he started for us this year he pitched well, too."
Marshall has made 5 starts, most recently last Sunday against Philadelphia in Zambrano's spot, and is 1-4 with a 4.82 ERA.
Prior to this season, Marshall was 13-17 in 45 starts since 2006.
"Sean Marshall, he's done a good job and he'll step up," teammate Mark DeRosa said.
Zambrano's teammates don't want to think about being without their ace for an extended period, but it seemed a real possibility on Wednesday.
"We'll just have to see how he is," Jim Edmonds said. "I really didn't know anything was wrong with him when he came out (Tuesday night)."
"We've got to move on," DeRosa said. "You never want to lose your superstars, but baseball waits for no one."
Hidden ball trick: In all the times Jim Edmonds has played in Wrigley Field, he couldn't remember anything happening like Tuesday when he went crashing into the wall in center field trying to catch Hunter Pence's triple only to have another ball pop out of the ivy and land at his feet.
The second ball likely was stuck in the ivy from batting practice.
"I didn't even see the other ball until I walked away," Edmonds said. "That was a first for me."
Just in case: Right-hander Kevin Hart was recalled from Class AAA Iowa on Wednesday to give the Cubs some help in their short-handed bullpen.
"We took (Sean) Marshall out of the bullpen and (Chad) Gaudin has been unavailable, so we brought up another young arm," Lou Piniella said.
Piniella also wasn't sure what he could expect out of Carlos Marmol and Kerry Wood on Wednesday night after each worked 2 innings in Tuesday's loss.
Since being returned to Iowa on July 23, Hart worked exclusively in relief with 5 saves and a 1.56 ERA in 16 appearances.
Playoff tickets: Registration for a random lottery for the opportunity to purchase tickets to the potential NL division series and NL championship series games to be played at Wrigley Field began Wednesday at cubs.com.
Registration ends Sept. 19 for the NLDS and Sept. 29 for the NLCS - the same days the lotteries take place.
Information for potential World Series games will be announced at a later date.