Delray Beach (Fla.) Atlantic cornerback Antwaine Richardson announced via Twitter that he was decommitting from Michigan:

Richardson is a three-star prospect standing 6-0 and weighing 168 pounds. He had committed to U-M June 12, 2015 but did not play his senior season after suffering a torn ACL in August. He visited Michigan officially Dec. 11.

The Florida product is the third Michigan commit in two days to reopen his recruitment following Downers Grove (Ill.) South offensive tackle Erik Swenson Wednesday and Winchester (Ind.) Community athlete Kiante Enis earlier this morning.

Michigan now has 20 commitments in the 2016 class with just under two weeks until national signing day Feb. 3.