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.

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

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