Remember when the Los Angeles Chargers had a dynamic receiving duo? It wasn't very long ago, when the team employed Keenan Allen and Mike Williams. Allen was traded to the Chicago Bears and Williams was released due to cap constraints last offseason.

Wide receiver Mike Williams is retiring, the Chargers confirmed Thursday as the team began camp.

The Chargers selected Williams with the No. 7 overall pick in the 2017 NFL draft, and it didn't take him long to establish himself as a key piece of the offense.