SAN DIEGO (AP) San Diego Chargers rookie Joey Bosa has been ruled out of his fourth straight game due to a hamstring injury.

Bosa missed all of training camp during a nasty contract dispute and then hurt himself after he signed.

Also out for Sunday's home game against Drew Brees and the New Orleans Saints is cornerback Brandon Flowers, who has a concussion.

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Listed as doubtful are tight end Antonio Gates with a hamstring injury and left tackle King Dunlap with migraines. Coach Mike McCoy said Dunlap's migraines aren't related to the concussions he's suffered.

Listed as questionable are right tackle Joe Barksdale (foot), linebacker Jatavis Brown (hamstring) and guard Orlando Franklin (back).

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