"He looks good," manager Mike Redmond said. "His swing is coming around. His approach is good. He's close, if not ready to go."
The way Roger Dean Stadium is designed, the Marlins' complex is located behind the wall in left to left-center. The Cardinals' building is on the right-field side.
In batting practice, Stanton and first baseman Michael Morse are the two Marlins who regularly place baseballs on top of the building.
Stanton's shot on Thursday was to left-center, and it bounced around in the balcony.
The reigning National League home run champion with 37, Stanton is starting to get locked in. Stanton's hitting .294/.359/618 with two home runs, five doubles and nine RBIs.
Stanton will make the trip to Kissimmee, Fla., on Friday when the Marlins face the Astros.
"Probably try to get these guys out there close to a full game, if not, get them four at-bats the next couple of days, if we can," Redmond said. "These guys are close, if not ready to go right now. It's a matter of getting them some more at-bats and keeping them feeling confident."
Joe Frisaro is a reporter for MLB.com. He writes a blog, called The Fish Pond. Follow him on Twitter @JoeFrisaro. This story was not subject to the approval of Major League Baseball or its clubs.