Wednesday was not a good day for Brandon Belt. Shortly after he arrived at Citizens Bank Park, he returned to the hotel feeling terrible, his concussion symptoms not improving.

Belt clearly will not be returning when eligible to come off the seven-day disabled list Sunday. Instead, he might undergo more elaborate testing in San Francisco.

Manager Bruce Bochy noted the "unique" circumstance of Belt's concussion, how the symptoms were delayed until he played into the third inning of Saturday's game after he was hit in the face by a ball in batting practice.

"Now it's hanging on," Bochy said. "There is some concern here."

Panik's ankle: The Giants had better news on Joe Panik's sprained right ankle. The rookie said swelling did not increase overnight after he turned the ankle leaping onto first base in the first inning Tuesday as he tried to beat a throw.

Panik is from nearby New Jersey and had his parents and several friends watching. His folks saw him play in Arizona when he debuted, but the friends were seeing Panik in the big leagues for the first time. The second baseman lasted into the second inning. The friends stayed for all 14.