
Week 13 brings another packed injury slate, and fantasy managers are scrambling to determine who can be trusted in lineups with the playoffs on the horizon. Several key quarterbacks and playmaking skill players are managing injuries ranging from AC joint sprains to high ankle sprains to concussions, and these situations can dramatically alter fantasy outcomes. Below, we break down the latest medical context, return-to-play expectations, and real fantasy-football implications based on biomechanics, tissue-healing timelines, and historical performance data, giving you the edge you need to win your matchup this week.
Quarterbacks

Baker Mayfield
Injury: Left AC joint sprain
Analysis: Baker is dealing with either a grade I or II left AC joint sprain. These grades are always treated conservatively and tell us the joint is stable enough to be played through. Given that this is Baker's non-throwing shoulder, his ability to deliver the ball down the field is not a concern. The only concern with this injury is if Baker takes just one bad hit, his injury could be aggravated and knock him out of the game. The re-injury possibility is a real risk, and while his production while on the field won't be affected, fantasy managers will want to see at least who else they could start in Baker's place this week. If there is no one good available, you can still roll the dice with Baker.
Daniel Jones
Injury: Left Fibula fracture
Analysis: Jones is playing through a fracture in his left fibula. The fibula is one of the two bones in the lower leg, and the good news is that the fibula only bears about 15-20% of body weight during heavy activity, which is why Jones can push through. His ability to play also indicates this is a small break, whereas Omarion Hampton has missed the last seven weeks with a fibula fracture. The single most important factor here that is allowing Jones to continue to play is that it is his left fibula, not his right. A right-handed passer drives off the right foot and ankle for throwing power. The lateral portion of the lower leg (where the fibula is located) is particularly stressed during throwing. If this were Jones' right leg, he would be in a tough position attempting to throw.
Practice videos did show Jones limping and looking slower during his three and five-step drops (when the left leg is predominantly pushing off), but reporters stated that overall, he looked good. Jones should retain value while playing through his injury, but rushing upside will be reduced, and there is absolutely risk for worsening the injury.
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