"No, Tim Lincecum didn't become a volunteer food tester for President Barack Obama. He didn't eat a morsel on the team's visit to the White House on Monday.

But he took a bite of something bad that day, leading to a violent illness from which he was still recovering Wednesday. The Giants moved up Matt Cain to pitch on regular rest and they will wait until Thursday morning before deciding whether to do the same with Ryan Vogelsong in the series finale.

"We're hopeful he's going to gain strength," Giants manager Bruce Bochy said of Lincecum, who was scratched Tuesday. "If not, we're covered with Vogelsong. Obviously, we don't want him pitching if he's washed out."

Lincecum said he has lost "a few pounds" but felt well enough to play catch and eat a sandwich -- not a cheesesteak -- along with copious amounts of Pedialyte and water. He received intravenous fluids, too."