MIAMI -- Giancarlo Stanton suffered a possible groin injury while trying to stretch a single into a double on the final play of the Marlins' 8-7 loss to the White Sox on Saturday at Marlins Park.
With two outs against Chicago closer David Robertson, Stanton lifted a fly ball to short right field. Adam Eaton, who was playing the Miami slugger deep, charged but was unable to make a sliding catch.
Seeing the ball free, Stanton attempted to take second, but he pulled up and lunged head-first to the base, as he was tagged out by shortstop Tim Anderson.
After the final out was made, Stanton remained on the ground for a few seconds, as third-base coach Lenny Harris and trainer Dustin Luepker checked on him, and then the star right fielder gingerly walked off the field.
Asked if Stanton was fine, manager Don Mattingly said: "I'm not sure about that. It didn't look real good. If you've seen that replay, it looked like he kind of pulled something. He felt something in his groin area. They're looking at him now. We'll see what happens with that."
Stanton was "expected" to go on the disabled list, ESPN.com's Buster Olney reported Sunday morning.
Stanton had enjoyed a strong night with three hits, including a home run off James Shields and three RBIs.
In the second inning, Stanton's solo home run helped Miami rally back from an early four-run deficit.
Stanton has 25 home runs and 70 RBIs.
The Marlins have dropped four of five, and are now a half-game behind the Cardinals for the second Wild Card spot. The Marlins wrap up their homestand on Sunday at 1:10 p.m. ET.
Ichiro Suzuki is the club's fourth outfielder if Stanton is unavailable.
Joe Frisaro has covered the Marlins for MLB.com since 2002. He writes a blog, called The Fish Pond. Follow him on Twitter @JoeFrisaro and listen to his podcast. This story was not subject to the approval of Major League Baseball or its clubs.