Mike Williams retires from the NFL, closing the book on a Chargers career defined by acrobatic catches, clutch plays, and relentless effort.

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.

Mike Williams' return to Los Angeles won't happen after all. The veteran wide receiver informed the Chargers that he plans to retire after eight seasons, NFL Network Insider Ian Rapoport reported on Thursday.