their great passing attack the Raiders also had a powerful running game, led by fullback Mark van Eeghen (1,012 rushing yards, 17 receptions) and halfback Clarence Davis (516 rushing yards, 27 receptions). Another reason for the Raiders' success on offense was their offensive line, led by left tackle Art Shell and left guard Gene Upshaw, as well as perennial All-Pro center Dave Dalby. Injuries early in the season forced the Raiders to switch from a 4–3 to a 3–4 defense. The switch benefited the team, as they won their last 10 games and finished the regular season with the best record in the league, 13–1. The Raiders' defense was anchored by great linebackers, such as Phil Villapiano and Ted Hendricks, while defensive end Otis Sistrunk anchored the defensive line. Their defensive secondary was extremely hard-hitting and talented, led by safeties Jack Tatum and George Atkinson, and cornerbacks Skip Thomas and Willie Brown. Brown, Upshaw, Biletnikoff and running back Pete Banaszak were the only holdovers from the Oakland team that was defeated nine years earlier in Super Bowl II. Many accused the Raiders defense of being overly aggressive, especially Atkinson, who inflicted a severe concussion on Pittsburgh Steelers wide receiver Lynn Swann in the previous season's AFC Championship Game. Atkinson added to that reputation as the Raiders advanced through the playoffs to Super Bowl XI, as Atkinson inflicted another concussion to Swann in the Raiders' 1976 season opener. In the Raiders' 24–21 playoff win over the New England Patriots, Atkinson broke the nose of Patriots tight end Russ Francis. In reaction, Pittsburgh head coach Chuck Noll complained of a "criminal element" in Atkinson's play. Atkinson himself denied deliberately trying to injure anyone and pointed out that at 6′0″ and 185 pounds, he was one of the smallest players on the field. The Raiders and their fans were often known to counter these accusations against Atkinson and Jack Tatum by pointing out the physical way that Pittsburgh cornerback Mel Blount covered Oakland's speedy split end Cliff Branch. Two of the Raiders' players (whose names were not revealed) bought marijuana from Red Hot Chili Peppers singer Anthony Kiedis' father, Blackie Dammett, smoked it before the game, and played the game under the effects of the drug. This was revealed on Kiedis’ biography from 2004, Scar Tissue. Minnesota Vikings The Vikings, coached by Bud Grant, won the NFC Central for the eighth time in