Chargers RB Justin Jackson (calf) is out for Sunday’s game against the Dolphins. He was added to the injury report on Thursday and spotted in a walking boot on Friday, so this might be a significant injury. Jackson, of course, was already set to drop off the fantasy radar with Melvin Gordon back. Jackson’s absence this weekend locks in Austin Ekeler as an every-down back — at least until the game gets out of hand. RB Troymaine Pope is next up on the depth chart. We’ll see if the Chargers call up RB Detrez Newsome from the practice squad.