At this point, the team is waiting to see what kind of time frame is needed for a full recovery.
"I think the next couple of days will [give us] a better feel on a time frame," Stanton said. "We really won't know for at least 24 or 48 hours."
2010 Spring Training - null
Sights & Sounds
Spring Training Info
A former football player in high school, Stanton noted that he never experienced a quad injury before.
"This is new territory for me," Stanton said.
The injury occurred in Stanton's second at-bat against the University of Miami at Roger Dean Stadium.
After chopping a ground ball to Miami Hurricanes pitcher Michael Rudman, Stanton sprinted down the line, but pulled up. He stumbled at the bag and fell to the ground.
"I was about halfway down the [line], and I just felt it while bringing my leg up," Stanton said. "My quad kind of tightened up on me. We'll see how it feels tomorrow."
The Marlins open their Grapefruit League schedule on Monday against the Cardinals at Roger Dean Stadium. Stanton will miss at least a couple of games. It's too early to speculate if it will be a matter of weeks.
"We don't know. I'm obviously super [ticked] off right now," Stanton said. "It might be worse tomorrow. It might calm down tomorrow. We'll see."
Marlins president of baseball operations Larry Beinfest said the team will be cautious with their young standout right fielder.
"Injuries are part of the game," Beinfest said. "You never like to see them happen, whether it's Day 1 or a couple of months from now. Hopefully, we have time on our side."
Marlins assistant trainer Mike Kozak immediately tended to the 21-year-old, who walked off the field under his own power. Scott Cousins replaced Stanton in right field.
Prior to the bottom of the third, Stanton was driven back to the Marlins clubhouse in a golf cart.
Stanton, who was batting cleanup on Sunday, paced all MLB rookies in 2010 with 22 home runs.
"It's never a good thing, but I'd rather it be now than later," Stanton said. "I have some time for it to heal up."