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.

Yahoo Sports is on the road this summer hitting camps across the country, and we're rounding up the news, updates, position battles and more you need to know.

The Los Angeles Chargers have placed veteran receiver Mike Williams on the physically unable to perform list to begin training camp, per Ian Rapoport of NFL Network.

Mike Williams could warn former Chargers teammate Keenan Allen if a Bleacher Report prediction comes to fruition.