JUPITER, Fla. -- In a best case scenario, Placido Polanco will be back in the Marlins' lineup in three or four days, but that isn't a given.
Polanco, who continues to rest a strained right oblique, last played in a Grapefruit League game on March 1. The team initially called it a tight back, but an MRI revealed a mild oblique strain.
"These can be a little bit tricky," the 37-year-old said.
The Marlins' third baseman took batting practice on Monday, and he's been running. He is not yet throwing.
"There is still time," manager Mike Redmond said. "Hopefully we will get him out here. I'm hoping in the next three or four days. You never know. It's kind of on him. When he feels like he's able to throw and do the things necessary, then we will get him back out there."
Opening Day is April 1 at Washington, and Polanco has been out for 11 days.
There is a level of concern because the season is approaching, and Polanco has had injury issues the past few seasons. Last year with Philadelphia, Polanco had low-back issues, and he appeared in 90 games.
Redmond is encouraged that Polanco is able to do some baseball activities.
"If he wasn't able to do anything, I'd be way more concerned," Redmond said. "He's able to hit, move around, run and all that stuff. I'm not as concerned. Now am I concerned that he isn't able to play yet? Of course, but we just have to give it a little time. We still have 16-17 games left."
Joe Frisaro is a reporter for MLB.com. He writes a blog, called The Fish Pond. Follow him on Twitter