CLEARWATER, Fla. -- Jimmy Rollins looked pretty healthy Thursday at Bright House Field.

Rollins caused a mild stir at Dunedin Stadium on Wednesday, when he said he has had discomfort in his back since November. But the Phillies star, who is sharing time at shortstop with Derek Jeter for Team USA for the World Baseball Classic, played all nine innings Wednesday in an exhibition against the Blue Jays. He then went 1-for-2 with a run scored Thursday in Team USA's 9-6 victory over the Phillies.

But the words "back" and "discomfort" always seem to be a little alarming.

So, Jimmy, any reason to be concerned about the back?

First, Rollins said it isn't his back. It's a rib on the right side of his back.

"It was just tight," Rollins said. "I should have stretched it out, that's all."

Rollins, the Phils and Team USA don't seem too concerned.

"The trainer for Team USA contacted us yesterday to let us know Jimmy has had some discomfort," Phillies general manager Ruben Amaro Jr. said. "We didn't know about it. He hadn't reported it to [head athletic trainer Scott Sheridan]. It can't be that big of a deal if he's playing. We've just got to make sure he takes care of [himself]."

Rollins said he has had this problem before, although it last happened when the Phillies played Spring Training games at Jack Russell Stadium.

"I won't take any chances," Rollins said. "If I'm hurt, I'll just be hurt."