Undrafted free agents: James Harrison, OLB; Alejandro Villanueva, LT; Chris Boswell, K; Ramon Foster, OG; Steve McLendon, DT; Robert Golden, S; Roosevelt Nix, FB; Tyler Murphy, QB/WR; Fitzgerald Toussaint, RB; Jordan Berry, P; Terence Garvin, LB.

Starts: Foster (12), Berry (12), Boswell (8), McLendon (7), Villanueva (6), Nix (4), Golden (3).

Highlights: The Pittsburgh Steelers are still cashing in on one of the best undrafted free-agent stories of the past two decades. At age 37, James Harrison is tied for the team lead with five sacks despite one start. He's in a perfect role as part of a four-man outside linebacker rotation. A few newcomers also have impressed in their first seasons in Pittsburgh. Villanueva is still raw as far as his technique goes, but he has loads of potential as an athletic, 6-foot-9 left tackle. Boswell, signed to replace place-kicker Josh Scobee after the team's 2-2 start, is in the top 10 in field goal percentage at 90.9 percent (20-of-22). Boswell is arguably the team's most important acquisition of the season after a nightmarish stretch of kicker injuries early in the season. OG Foster has started for much of the past seven years and has quietly put together a solid season. During training camp, the Steelers liked Nix's hard-hitting ways so much that they kept two tight ends on the roster, which is rare in today's NFL. Nix has helped the running game stay successful as a lead blocker. Golden is a core special teamer and captain, and McLendon is a serviceable run-stopper. All around, the Steelers continue to have success by combing the undrafted talent pool.