The will be without in San Francisco, who is the team's best linebacker in pa s coverage. That leaves the team susceptible to opposing tight ends, but will the be healthy enough to take advantage? (ankle, Dallas Keuchel Jersey knee) and (knee) are both listed as questionable on the injury report, but McDonald told reporters Friday that he's playing. Davis' status is le s certain. He participated in each practice this week on a limited basis, but he told reporters that he's still experiencing pain when he runs."," Davis said Friday, via the San Francisco Chronicle. "I just want to play it by ear and continue to work. Hopefully, I'll feel great come game day."There has been a lot consternation about San Francisco's pa s-wacky approach in Arizona, but the mi sing tight ends were a huge reason why. Davis and McDonald give offensive coordinator Greg Roman flexibility in his play calling. We've long considered Davis underrated, even though he's widely recognized as one of the game's best. Outside of , he's the guy that makes the offense go. He's the biggest matchup problem on the team because of his speed and his run-blocking ability.The badly need to beat Philadelphia on Sunday, and Davis' availability is one of the biggest X-factors. Running backs and mi sed Davis last week just as much as Kaepernick.*We preview and pick every Week 4 game in the latest . * Jose Cruz Jr. Jersey