Mets manager Terry Collins said Steven Matz threw for the first time Monday since being shut down with a partially torn lat muscle in his left side last month.

Collins said before Monday night's game in Miami that the lefthander played catch from 60 feet in Port St. Lucie.

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It is still unclear when Matz might return to the Mets.

"It's going to be a little while," Mets assistant general manager John Ricco said.

Ricco said Matz still has to go through throwing progression before getting back on mound.

Matz, a Ward Melville product, was shut down for a little more than three weeks, which was roughly the original estimate. Matz is 2-0 with a 1.32 ERA since his promotion from Triple-A Las Vegas.