Puk earned the save Tuesday against the Tigers, delivering a scoreless 10th inning in a 1-0 victory.
The Marlins activated Puk (shoulder) from the 15-day injured list Monday.
Puk (shoulder) made the second appearance of his rehab assignment with the Marlins' rookie-level Florida Complex League affiliate Monday, striking out two over a scoreless inning.
Puk (shoulder) will throw a bullpen session Tuesday, Christina De Nicola of MLB.com reports.
Puk is playing catch and is no longer feeling fatigue in his left shoulder, Christina De Nicola of MLB.com reports.
Manager Skip Schumaker said Wednesday that Puk (shoulder) will pitch out of the bullpen upon his return from the 15-day injured list, Christina De Nicola of MLB.com reports.
The Marlins placed Puk (shoulder) on the 15-day injured list Saturday.
Puk (0-4) took the loss Friday against the Cubs, allowing seven runs on seven hits and three walks over three innings. He struck out four.
Puk and the Marlins won't play the Cubs on Thursday due to inclement weather, Maddie Lee of the Chicago Sun-Times reports.
Puk (illness) will start Thursday against the Cubs, Christina De Nicola of MLB.com reports.