If you still have something to play for this week, congratulations. Hopefully you are in a position where you don't need to add and start any players, but if you do, here are a few that could make a difference.
Karlos Williams, RB, Buffalo Bills
You can make the argument for his Bills teammate Mike Gillislee here, too, but I'd prefer to stick with the more talented player in Karlos Williams. He has been limited in workload due to injuries, but should take on more volume due to the injury to LeSean McCoy.
Cameron Artis-Payne, RB, Carolina Panthers
The rookie Cameron Artis-Payne heads into Week 16 as the favorite to lead the Panthers in carries against the Falcons. Carolina won the first matchup a few weeks back, 38-0, so there is once again blowout potential and Artis-Payne could be in for a huge game. Fozzy Whittaker will likely still be involved, and these two are only relevant if Jonathan Stewart is again ruled out with an injury.
Kirk Cousins, QB, Washington Redskins
I was shocked to discover Kirk Cousins is only 25% owned in ESPN leagues. I thought that with last week's plus matchup with Buffalo he'd be a top streamer, but apparently not. Cousins has been better at home than on the road, but the Eagles defense is weak enough that he will again be a streaming consideration. He is likely the best available quarterback.
Jerick McKinnon and Matt Asiata, RB, Minnesota Vikings
Adrian Peterson will probably play against the Giants, but in the case he does it, I'd be interested in both Jerick McKinnon and Matt Asiata, both of whom would join the flex conversation. Asiata would likely get the goal-line work but McKinnon would still have a strong floor as well.
Bilal Powell, RB, New York Jets
Bilal Powell now has three straight games with at least 15 PPR points, and now gets a matchup with the Patriots where the Jets will likely need to throw the ball. If that happens, Powell would likely be a lock for 6-7 targets and a handful of carries.
Rueben Randle, WR, New York Giants
I don't love the matchup with Minnesota, but if Odell Beckham's suspension stands, Randle should be started in most leagues as a WR2/flex. Yeah, I'm not thrilled about it either.
Christine Michael, RB, Seattle Seahawks
Christine Michael made the most of his 16 carries, which led the team, by turning them into 84 yards. I recommend cautious optimism going forward, especially against a (granted, weakened) Rams defense and I wouldn't start him unless I have to. He's more of a player I wouldn't want my opponent to start against me.
Zach Ertz, TE, Philadelphia Eagles
While Zach Ertz had his second straight good fantasy game with five catches for 78 yards and a score, I'm worried about his durability, as he temporarily left the game against the Cardinals twice due to injury. He'll be a low-end TE1 against a Washington defense that has been decent this season against the tight end.