Hubbard was famous for his aggressive style of offensive football, and was a fan favorite of the John Madden led Oakland Raiders in the early to mid 1970s. He was quick for his size, and was powerfully built. “Marv Hubbard was one of the toughest players we ever had,” Madden told the Contra Costa Times. “There are people that will have contact and people that won’t have contact, but only a few that will have it and really enjoy it. Marv was one of those guys who truly enjoyed the collision. He would look for it.”[SUP][5][/SUP]
Hubbard averaged 4.82 yards per carry during his professional career, which ranks fourth all time for an NFL fullback (behind only NFL Hall of Fame fullbacks Marion Motley, Jim Brown and Joe Perry) and is tied for 13th for all-time top yards per carry for any player in NFL history.[SUP][6][/SUP]
His career yards per carry average was higher than many of the games legendary running backs, including: Walter Payton, OJ Simpson, Eric Dickerson, Emmitt Smith, and Marshall Faulk.
Hubbard was a standout at the starting fullback position for the Oakland Raiders from 1971-1974 and part of 1975, and gave Oakland's fearsome air attack a balanced running threat. He helped lead the Raiders team to four consecutive AFC Western Division titles from 1972-1975 and three consecutive AFC Conference Championship Finals from 1973-1975.[SUP][7][/SUP]
Hubbard led the Raiders in rushing four straight seasons from 1971-1974, and averaged over 1,000 total yards from scrimmage per season during those four seasons.[SUP][8][/SUP]
He gained 1,100 yards rushing during the 1972 season, becoming the Raiders all-time single season rushing leader at the time.
He rushed for a total of 4,544 rushing yards, 3,755 of which came during his four full-time years from 1971-1974. Hubbard was named to the NFL's AFC Pro Bowl Team in 1971, 1972, and 1973.
Hubbard scored 24 touchdowns (23 rushing, 1 passing) during his career, six of which were against his favorite opponent, the Kansas City Chiefs.[SUP][8][/SUP] Hubbard was featured on the cover of Sports Illustrated on December 17, 1973 after the Raiders won a pivotal game over the division rival Chiefs. Marv kept an enlarged graphic of that magazine cover in his office throughout his post-football career. He was also an effective pass receiver coming out of the backfield, and caught 85 passes for 624 total yards, averaged 7.4 yards per reception.[SUP][9][/SUP] According to John Madden, he also used Hubbard on kick-off and punt return teams where "Marv turned from a fullback into a linebacker".
Multiple shoulder injuries sidelined him for part of 1975, and Hubbard spent all of the 1976 season on injured reserve. He received a Super Bowl ring for being a team member of the 1976 season Super Bowl Champion Oakland Raiders team (January 1977 Super Bowl XI). In 1977, He signed with the Detroit Lions, where he saw reduced play, then retired.