SAN FRANCISCO -- A day after his teammates sent a message by doing uninvited alterations to Jordany Valdespin's white T-shirt, the rookie arrived at the ballpark in a more-businesslike collared shirt.

Valdespin acknowledged he initially was upset when he returned to his locker after Wednesday's game and found the T-shirt's sleeves cut up with "EL HOMBRE" printed on the back and other markings. He had considerably calmed down by the time he left AT&T Park after that game. He actually wore the defaced T-shirt in the clubhouse again before today's game, showing a sense of humor.

"At the time you get mad, but what can I do?" Valdespin said. "I'm not going to fight with anybody in here. We're a family in here. Sometimes they do it to be happy, have fun."

Valdespin gave an interesting response when told that one day he could be a veteran and police the clubhouse, performing rituals such as cutting up unauthorized shirts. (Terry Collins has a dress code that includes no T-shirts.) Valdespin pointed to the locker of David Wright nearby, said Wright respects all of his teammates and added that he would follow that model and never do such things, even if some of his current teammates found it appropriate to destroy his clothing.

"No, no, no, no. I'd never do that," Valdespin said. "You know why? You've got to respect everybody. The example here is this guy, David Wright. He's the captain of the team and he respects everybody. ... The respect is very important on this team."

Collins appeared satisfied Valdespin's veteran teammates handled the issue -- or non-issue, in reality.

"Especially when you're a rookie, once in a while you make an error in judgment," the manager said.

• Frank Francisco has completed his rehab assignment and will be activated from the disabled list Friday in San Diego, Collins said.

• Johan Santana will throw bullpen sessions today and Sunday. Collins did not commit to a return date from the DL, but Santana seems on track for Wednesday's start against the Marlins at Citi Field.

• Switch-hitting Andres Torres (right thumb) is OK to bat right-handed, so he is in the starting lineup against southpaw Barry Zito after missing two games. Torres tried to bat lefty during batting practice Wednesday, but Collins may have to pull him if a righty reliever is inserted to face him.