"No, just lower extremity, [quadriceps], [hamstrings], but no, it's not back-related at all," said manager John Farrell.
Victorino, 34, believes the soreness stems from when he went from first to third in Friday's game against the Marlins.
"I haven't played in seven months. Just normal, everyday soreness," Victorino said.
Did he expect early soreness given the layoff?
"Obviously my ego's not going to tell me that coming into it," said Victorino. "I've done everything I could to be ready to go. It's different when you go out there, and defensively, I made that play against the wall. Then, obviously going first to third. Things that I wasn't accustomed to doing, you can't simulate that in the offseason."
For a player like Victorino, it's hard not to go full-throttle, even in Spring Training.
"When I was done yesterday and I slid into third, I sat there a little bit and thought, 'Was there a reason I just went first to third on a play like that?' But it's instincts," Victorino said. "It's the way I play the game. I don't know anything better when I'm on the field. That part of me comes out. 'Hey, this is what I see, I'm going to go after it.' I'll just count my blessings. I've made it through a few games and I'll be ready to go Monday."
Ian Browne is a reporter for MLB.com. Read his blog, Brownie Points, and follow him on Twitter @IanMBrowne. This story was not subject to the approval of Major League Baseball or its clubs.