The San Francisco Giants are refuting claims that the injury that sent Derek Holland to the injured list last month was fake.

Holland ripped San Francisco's front office Saturday night after he learned from manager Bruce Bochy that he was being moved to the bullpen.

"To be honest, I have no idea what they're doing," Holland said. "I don't mean that by Bochy and them. It's more the front office. They keep changing a lot of things. I did a fake injury. I'm not happy about that. But at the end of the day, I'm going to do whatever they ask me to do."

Zaidi said medical records back up the legitimacy of Holland's injury, described by the team as a bone bruise on his left index finger. He said there are often differences of opinion between players and management about the severity of injuries.

"The guy gets hit by a truck, he can't walk out on the field. That's, I guess, an unequivocal injury, but there's a lot of gray area beyond that," Zaidi said.