FOXBOROUGH, Mass. -- New England Patriots starting linebacker Jamie Collins is officially listed as doubtful for Sunday's game against the Denver Broncos after returning to practice Friday for the first time since Nov. 6. Doubtful means there is at least a 75 percent chance he will not play, according to the team's interpretation.

Meanwhile, receiver Danny Amendola is among three players who are questionable (50 percent chance to play). Amendola, who injured his left knee Monday against Buffalo, has been limited in practice all week.

Those were the two biggest takeaways from the Patriots' injury report Friday.

In addition, tight end Michael Williams (knee) and receiver Keshawn Martin (hamstring) are questionable. Williams' status could be tied to why the Patriots promoted tight end Asante Cleveland from the practice squad.

The Patriots have already ruled out cornerback Justin Coleman (hand) and receiver Julian Edelman (foot).