For the first four years of Justin Herbert’s career, Mike Williams was a pillar of the Chargers’ receiving corps.

The Chargers were the first team to open training camp this season, and they also have a lot of movement with their roster. Mike Williams informed the Chargers on Thursday that he plans to retire, and running back Najee Harris was placed on the active/non-football list due to an eye injury.

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.