"I guess [Marmol] said he's done that before and been able to pitch through it, but we'll have to wait and see how that is tomorrow," Marlins manager Mike Redmond said.
Marmol, 31, recorded two outs before walking Jason Heyward. Marmol appeared to injure his hamstring while throwing ball four to Heyward. The pitch went high and outside, prompting Miami catcher Jarrod Saltalamacchia to trot out to the mound and check on the right-hander.
After an on-mound meeting with Marmol and a trainer, Redmond decided to pull Marmol for southpaw Mike Dunn. Dunn struck out Andrelton Simmons swinging to strand Heyward at first and end the inning.
Joe Morgan is an associate reporter for MLB.com.
This story was not subject to the approval of Major League Baseball or its clubs.