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07/27/11 8:18 PM ET

Ailing Lincecum hoping to rejoin rotation soon

PHILADELPHIA -- Recovering from the weakening effects of food poisoning, Tim Lincecum didn't rule out the possibility of starting Thursday against the Philadelphia Phillies after being pushed back two days in the Giants' starting rotation.

But, Lincecum said Wednesday, "I don't want to get too ahead of myself."

The right-hander wanted to gauge how he felt after playing catch Wednesday and resting more. Lincecum said that he began feeling sick Monday morning, before the Giants' White House visit, and progressively felt worse until the Giants scratched him from his scheduled start here Tuesday.

"It just takes a lot out of you," Lincecum said, noting that he lost "a few" pounds. Lincecum received intravenous fluids to improve his hydration and said he managed to eat a sandwich Wednesday. It was not, he said, a Philadelphia cheesesteak.

Matt Cain started on normal rest in place of Lincecum on Wednesday.

Lincecum's illness will not force any of the starters to pitch on short rest, due to Monday's scheduled off-day. Ryan Vogelsong and Madison Bumgarner can fill in for Lincecum on Thursday and Friday, respectively, if necessary. The Giants won't need a fifth starter until Saturday in Cincinnati.

Giants manager Bruce Bochy said that he and the club's medical staff won't determine Lincecum's pitching status until Thursday.

"We're hopeful that he's going to gain his strength back and be able to go [Thursday]," Bochy said. "... Obviously we don't want him pitching if he's washed out."

Chris Haft is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.