EL SEGUNDO — The Chargers held their 24th and final practice of training camp Thursday afternoon, which meant running back Najee Harris was sidelined for each and every one of those sessions after suffering what his agent called a “superficial” eye injury during a July 4 fireworks accident .

What happens next is anyone’s guess.

Coach Jim Harbaugh couldn’t say for certain when asked Thursday. Harris hasn’t spoken to reporters since before the accident in his Bay Area hometown of Antioch. So, getting a definitive answer on Harris’ availability to practice or to play was elusive, mainly because the Chargers say publicly they don’t know, either.

The NFL doesn’t require teams to provide injury updates until Week 1, and even then teams don’t often provide specifics. The Chargers so far have

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