On the disabled list since April 30 with a strained right hamstring, Stanton is wrapping up his rehab assignment with Class A Jupiter.
"Stanton is any day," Marlins manager Mike Redmond said.
The Marlins, last in the Majors in runs scored with 179 entering Sunday, are eager for Stanton's presence. Even though he is off to a slow start, batting .227 with three home runs and nine RBIs, he is one of the most feared power hitters in the game.
"As a manager, to have him in the lineup, even if he takes, he's probably going to walk a couple of times," Redmond said. "Even if he just stands there, that's a great presence to have in our lineup. I feel comfortable, if he feels like he's ready to go, he's ready to go. We'll see. We've got to be smart, and make the right decision."
The Marlins on Sunday welcomed back first baseman Logan Morrison, who opened the season on the 60-day disabled list after undergoing right knee surgery last September.
"Some guys feel like they need to have an extended rehab assignment," Redmond said. "In LoMo's situation, he was out for such a long time. It was important for him to go down there and show that he is healthy and feeling good. He really needed the at-bats, without having a Spring Training.
"Stanton, he's had at-bats. It was more of him feeling healthy, feeling comfortable, with his hamstring and his body."
Joe Frisaro is a reporter for MLB.com. He writes a blog, called The Fish Pond. Follow him on Twitter