Garrett pitched 5.1 innings, allowing five runs on five hits and two walks while striking out eight batters in Sunday's 7-6 extra-inning win over the Phillies.
The Marlins reinstated Garrett (shoulder) from the 15-day injured list Wednesday.
Garrett (shoulder) struck out 13 batters and allowed one hit and one walk over 5.2 scoreless innings in his rehab start Monday for the Marlins' rookie-level Florida Complex League affiliate.
Garrett (shoulder) is scheduled to cover around six innings or 75 pitches Monday in a rehab start with the Marlins' rookie-level Florida Complex League affiliate, MLB.com reports.
Garrett (shoulder) allowed one hit and three walks over five scoreless innings in a rehab start with Triple-A Jacksonville on Thursday.
Garrett (shoulder) is set to make at least one more rehab start this week before potentially returning from the 15-day injured list, MLB.com reports.
Garrett (shoulder) threw a 25-pitch side session Tuesday and is scheduled to pick up his rehab assignment Friday with Triple-A Jacksonville, Christina De Nicola of MLB.com reports.
Garrett (shoulder) threw a bullpen session Sunday, Christina De Nicola of MLB.com reports.
Garrett (shoulder) played catch from 90 feet Friday, Isaac Azout of SBNation.com reports.
Marlins manager Skip Schumaker said Monday that Garrett (shoulder) experienced a "dead arm" after his last bullpen session, Jordan McPherson of the Miami Herald reports.