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.

Chargers Head Coach Jim Harbaugh and quarterback Justin Herbert took the podium at The Bolt on Day 1 of Chargers Training Camp. Below are three takeaways from their media availability Thursday:

The Chargers officially announced on Thursday that they’ve placed running back Najee Harris on the non-football injury list.

The Pittsburgh Steelers have running back action to fill this season after Najee Harris left for the Los Angeles Chargers. They know they can count on returner Jaylen Warren. And they hope they can count on rookie Kaleb Johnson from Iowa. But they also added another RB this offseason: Kenneth Gainwell.

Steelers draft Kaleb Johnson: With Najee Harris gone, a path to RB1 status in Fantasy Football is possible Johnson wore his opponents down at Iowa and he'll fit right in with the Steelers

Chargers' Najee Harris sustains superficial eye injury due to a fireworks mishap on July 4th but is expected to be ready for the NFL season.

As the Los Angeles Chargers open training camp with rising expectations under head coach Jim Harbaugh, the spotlight is already shining on two prominent offseason additions — running back Najee Harris and wide receiver Mike Williams — both of whom are navigating injuries with vastly different outlooks.

Harris was "disappointed for a minute" when the Steelers declined his option but would "most definitely" consider re-signing long-term.

Pro Bowl running back Najee Harris explained why he left the Steelers and signed a contract with the Chargers during the NFL’s free agency period.