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.

EL SEGUNDO — Chargers wide receiver Mike Williams told the team he planned to retire rather than continue his standout NFL career after eight seasons, a club spokesman confirmed while the opening day of training camp was underway Thursday morning. Williams spent seven of his eight years in the NFL with the Chargers.