Jackson, who has missed the past five games with a hamstring injury, did not practice Wednesday and coach Jay Gruden called him a "long shot" for Sunday’s game against Tampa Bay.
Reed, though, did practice and pronounced himself 100 percent and "definite" for Sunday.
Here’s a look at others on the injury report:
Corner Chris Culliver: Did not practice because of his left knee. Gruden said Culliver has had an MRI and that no surgery is needed. But Gruden said, "He’s having some things done to it to hopefully relieve the issue and get him where he feels more comfortable to play. He’s still dealing with some pain and we’re trying to alleviate the pain."
Left tackle Trent Williams: He was limited in practice, but remains in the concussion protocol. "I feel fine, but the whole protocol is new to me," Williams said. He has not yet been cleared for full contact.
Center Kory Lichtensteiger: Did not practice because of his shoulder and neck. Lichtensteiger needs to re-gain some strength in his left shoulder. "It's not a serious deal where he's threated with paralyzation or anything like that," Gruden said. "It's just a matter of getting strength back on his left side. He's coming along pretty good, but I don't know how long though."
Running back Chris Thompson: He did not practice because of his back. He said his back was pretty sore and swollen on Monday, but that he’s doing better now. Still, it’s a wait-and-see situation for Thompson.
Defensive end Jason Hatcher: Did not practice because of his knee.
Linebacker Keenan Robinson: Did not practice because of a sore heel. Gruden said he wasn’t worried about his status for Sunday.
Defensive end Stephen Paea: Was limited because of a back injury.
Running back Matt Jones: He practiced in full and and Gruden said, "we have high hopes for him ... it's indicating that he's going to be able to go unless he has a setback."