Hector Sanchez has more pressing issues than his season being all but over.

"A couple days ago," Sanchez said, "I was at the market with my wife, and I started getting dizzy when getting in the car. That's not a good feeling."

Sanchez was shut down after suffering his second concussion during a rehab assignment with Triple-A Fresno, and now, as manager Bruce Bochy said, "We have to look out for his well-being and do the right thing."

The Giants told the catcher that he will not play again this year. Sanchez, who was back in the clubhouse Wednesday, is to stay away from baseball activity for three weeks before revisiting doctors. Until then, he's exercising and getting his vision monitored.

Could Sanchez be in for a position change?

He's athletic and moves well for his size. In spring training, he was told with little notice he'd play first base in a game and did surprisingly well.

"To be honest, at one moment I think I don't want to be a catcher anymore," he said. "But it's a position that I know. I just want to get ready and get back. I just want to be on the field no matter where. I never saw myself at a different position. I want to be a catcher."

Bochy said Brandon Belt, who's also on the concussion disabled list, is progressing better than Sanchez, so he could still play again this season.