The tone in Mike Redmond’s voice suggested Jacob Turner’s spot in the starting rotation could be in jeopardy.

One day after Turner labored in a minor-league game, the Marlins manager said Turner is “definitely a concern.”

“He’s still got a couple of more outings, so hopefully he can get it going,” Redmond said. “But he just struggled, mostly command problems. His last outing was much better, but this one, it seemed he scuffled.”

Redmond said Turner went three innings Thursday when he faced the Cardinals’ Triple A team on one of the back diamonds at Roger Dean Stadium and walked three. In his two Grapefruit League outings, Turner has given up six earned runs in 3 1/3 innings while walking four and also hitting a batter.

“He’s definitely not where he was at the end of the season last year,” one major-league scout said of Turner, who joined the Marlins in late August, not long after being acquired with catcher Rob Brantly in a trade with Detroit for Anibal Sanchez and Omar Infante. “It looks like he’s lost a little velocity and sharpness in his breaking ball.”