Chargers wide receiver Mike Williams, 30, has announced his retirement from the NFL, two days after being placed on the PUP list.

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

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 entered the offseason obviously needing help at wide receiver, but inexplicably, they largely ignored the position in free agency and o