How big of a setback is it?
"I think we'll know more tomorrow, but it's not great [news]," Beinfest said. "He threw a bullpen on Friday and reported a little bit more stiffness, and just didn't feel right. So we set him up to go see Andrews tomorrow and we'll take it from there. Obviously it was not what we were looking for in the progression."
Johnson, a two-time All-Star, is on the 60-day disabled list with right shoulder inflammation. He resumed throwing off the mound on June 17 and, by Beinfest's count, had tossed three or four bullpen side sessions since then without incident.
"He had been feeling well and was right on the throwing progression to come back that first weekend after the All-Star break, when he's eligible to come off the 60-day," Beinfest said. "So that's obviously in jeopardy now, so we'll see what's happening."
Johnson is eligible to be reinstated on July 16 during the Marlins' road series against the Chicago Cubs. He had experienced some shoulder tightness since Spring Training, but he felt significant discomfort during his May 16 start against the Mets, when his typical 95-96 mph velocity dropped to 90-91.
The Marlins placed him on the 15-day disabled list on May 21, retroactive to May 17. He was moved to the 60-day disabled list on June 15.
Johnson is 3-1 with a 1.64 ERA in nine starts.
"I know it's frustrating for him because he wants to be out there, he wants to help this team," Beinfest said. "I know we all want him to be out there, but that's the way it goes. You have to deal with injuries sometimes. He's probably had more than his share. It's not from lack of work or strength because he's a great worker. He takes great care of his body. Unfortunately it hasn't held up the way he's hoped and we'd hoped."
Joe Frisaro is a reporter for MLB.com. Eric Gilmore is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.