Miami Marlins third baseman Placido Polanco was scratched from Wednesday’s lineup against the Cardinals. Polanco last weekend sat out due to back spasms, but he anticipated being ready by Wednesday. He felt fine hitting. The problem was throwing. “It might be more like an oblique,” said manager Mike Redmond, before the 7-2 loss to the Cardinals at Roger Dean Stadium. “I don’t think it’s going to be an extended thing. We just want to make sure he’s 100 percent before we run him back out there. We need him for the long haul.” Polanco’s durability has been an issue the last couple of seasons. In 2012, back issues limited him to 90 games. “He’s smart in that he didn’t keep pushing it,” Redmond said. “I’m not worried. He knows his body and what it’s going to take him to be ready. The games he’s played in out here he’s looked good and we still have like 20 games left in spring training. We can get him plenty of at-bats in a short amount of time.