The Cubs reliever will miss the rest of the season with cracked cartilage in his rib cage on the left side. Doctors told him that within two weeks the cartilage would be recovered and he'd be ready to pitch again. Piniella said Gregg will not need any surgery, and his recovery time should be sufficient to be able to return to pitching during the offseason in preparation for the 2010 season.
Gregg was the team's closer until a disastrous weekend on Aug. 1 and 2, when he blew back-to-back games against his former team, the Florida Marlins.
Gregg has a 5-6 record with a 4.72 ERA and 23 saves in 30 opportunities this season. He has a 6.75 ERA and four blown saves since the All-Star break.
Piniella also said on Tuesday that he is considering resting third baseman Aramis Ramirez most of the rest of the season. Piniella admitted that Ramirez has complained of soreness in his right shoulder, which he originally dislocated in a game against Milwaukee on May 8. Ramirez missed two months of the season as a result of the injury.
Ramirez downplayed the soreness in his right shoulder.
"I'm going to play again," Ramirez said. "I'm not through for the season."
When asked when that might be, Ramirez said, "We have two games tomorrow. We'll see about it."