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.

Wide receiver Mike Williams is retiring, the Chargers confirmed Thursday as the team began camp. Just as a hole opened in the receivers room, the Chargers also signed rookie receiver Tre’ Harris, the team announced, ending the second-round pick’s contract holdout.

The Los Angeles Chargers won't be celebrating a Mike Williams reunion after all. The veteran wideout decided to retire after signing a one-year deal this offseason to return to the Bolts. The Chargers are still pretty thin at wide receiver.