Acquired from the Blue Jays last November as part of the 12-player trade, Alvarez went on the 15-day disabled list the day before the season opened with right shoulder inflammation and was transferred to the 60-day DL in early May after suffering a setback. He was initially slated to be Miami's No. 4 starter.
"He was good, got his pitches in," manager Mike Redmond said. "He pitched really well. They got a couple runs off him in the first, but after that, he was fine."
Manager Mike Redmond said on Monday that Alvarez might only need one or two more rehab starts before making his season debut with Miami.
Tyler Emerick is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.