Guzman (elbow) was reinstated from the 60-day injured list Tuesday and optioned to Triple-A Jacksonville, Christina De Nicola of MLB.com reports.
Guzman has been on a rehab stint with Jacksonville since late June, and he's allowed five earned runs on nine hits and four walks across 7.1 innings. He'll reclaim his spot on the 40-man roster with his Tuesday activation but will remain in Triple-A for the time being. The Marlins could look to stretch out Guzman in hopes of having him available to start big-league games later this season.