Over the past two years Graham has looked like he could be among the best pass-rushers in the league if given the opportunity. At tight end, Zach Ertz (+5.9) has been taking advantage of his increased playing time, followed by James Casey (+5.4), who has been underutilized. Outside of Graham, when other Philadelphia defenders have been asked to step up, they haven't met the challenge.
Backups grade: 25.0 | Deepest position group: Defensive line
Shallowest: Tight end | Best non-starter: DE Glenn Dorsey (+21.8)
The 49ers are a team known for their depth, led by recent free-agent additions Mario Manningham (+7.0) and Dorsey. However, the 49ers haven't been as elite a team this season as last, and part of that has been due to the lack of depth at wide receiver and tight end. The backups in the front seven include a lot of young, unproven players, while the backup defensive backs are mostly players who didn't pan out elsewhere.
Backups grade: 24.6 | Deepest position group: Defensive line
Shallowest: Offensive line | Best non-starter: HB Danny Woodhead (+27.1)
The Chargers have used a nickel defense most often this season, which makes Sean Lissemore (+15.2), Lawrence Guy (+8.5) and Cam Thomas (+2.4) all backups -- with Lissemore standing out the most. Whether you consider Woodhead or Ryan Mathews the starting running back, both have played very well when called on. Ladarius Green (+9.3) also looks like a future star at tight end. The Chargers tried to fix the offensive line in the offseason, but it still has a little ways to go. Due to injuries, they lack players who can come off the bench and provide a pass rush off the edge.
Backups grade: 24.4 | Deepest position group: Wide receiver
Shallowest: Halfback | Best non-starter: WR Marvin Jones (+9.3)
Jones has yet to see a large increase in snaps at wide receiver, but his play on a smaller sample size has continued to be impressive. At nearly every position the Bengals have some depth, with the exception of running back, where BenJarvus Green-Ellis (-11.7) hasn't been playing nearly as well as potential offensive rookie of the year Giovani Bernard.
Backups grade: 23.6 | Deepest position group: Tight end
Shallowest: Offensive line | Best non-starter: TE Matt Spaeth (+15.9)
The Steelers get a big boost in their backup grade thanks to Spaeth, who was recently activated and was the best run-blocking tight end in the league in 2012. Outside of the offensive and defensive lines, most of the Steelers' backups haven't seen much playing time in the past. Felix Jones (+4.7) is the only other non-lineman with more than 700 career snaps. For the past few years, the Steelers' biggest problem has been the O-line, and that is no different with their backups this year.