The Phillies had hoped Wolf would return by early July, but that date might be pushed back to the end of the month, at the earliest. Assistant GM Ruben Amaro Jr. said the injury should push the veteran lefty's rehabilitation back about a week.
Manuel was suspended for one game by Major League Baseball because of an altercation with first-base umpire Bill Miller during a June 17 game aganst the Rays.
The announcement said the Phils skipper was suspended for "aggressive action."
Manuel came out to argue with Miller after the umpire ejected pitcher Cory Lidle, who had been ejected for shouting something from the dugout at Tampa Bay's Julio Lugo. Lidle, who did not start that game, had taken offense to Lugo attempting to bunt with two outs and the bases empty with a four-run lead.
During the argument, the bill of Manuel's cap appeared to hit Miller.
"I don't remember billing him," Manuel said.
With Tuesday's game rained out, Manuel will serve his suspension by missing the first game of Wednesday's day-night doubleheader.
Philling in: Pitching a rehab start for Class A Clearwater on Tuesday, righty Jon Lieber allowed four runs on seven hits in five innings. He walked none and struck out three. ... Catcher Mike Lieberthal had been scheduled to catch that game, but he didn't. He ran on Monday and wasn't ready for game action. The team isn't sure when he might return. ... Righty Julio Santana is scheduled to have Tommy John surgery on his right elbow on Wednesday. He went on the disabled list on May 30.
The Phillies will send two rookies to the mound for Wednesday's day-night doubleheader at 1:35 p.m. ET and 7:05 p.m. Lefty Cole Hamels and righty Scott Mathieson have made a combined eight appearances.
Hamels is coming off a seven-inning outing against the Yankees in which he allowed two runs on six hits. Mathieson's last outing came in relief on Friday night against the Red Sox, when he allowed one run in 4 2/3 innings.
Baltimore lefty Erik Bedard will start the opener, with righty Kris Benson going in the nightcap.
Ken Mandel is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.