"I'm pitching Monday," Lilly said after throwing a bullpen session at Wrigley Field before Friday's games against the Cubs.
Lilly is scheduled to start Monday night in the homestand opener against the Giants. He was removed after six innings in Colorado when his side stiffened up, and the lefty said at that time that he was forced to cut short his bullpen session last Sunday.
Lilly is 3-0 with a 1.38 ERA, tied for fourth in the league. He missed a start when he opened the season on the disabled list because of a stiff neck.