These three players could all fill in now that Justin Tuck (pectoral) is out for 2015. Brian Bahr Getty Images

Justin Tuck can't be replaced as a leader in the Raiders' locker room.

But the veteran defensive end mentored several young players -- and it's time to see if one of them can step up now that he's out with a pectoral tear.

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Here are three candidates the Raiders could call on immediately this weekend:

1. LB Aldon Smith: The troubled former 49er is undoubtedly explosive with his hand in the dirt. But moving Smith from linebacker opposite Khalil Mack to Tuck's hand-in-the-ground role could discombobulate a pass rush that already lacks cohesion.

2. DL Mario Edwards Jr: Tuck took Edwards Jr. under his wing this summer for a reason; he saw the promise the second-round rookie had. The former Seminole is needed now -- not just for Tuck's pass-rushing prowess, but for his run-stopping ability too.

3. DE Denico Autry: Autry missed Oakland's Week 5 loss to the Broncos, but he's back just in time to help out. He has the size (6-foot-5, 270 pounds) and positional versatility to become a poor man's Tuck.

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