He played college football for the Northeastern Oklahoma A&M Golden Norsemen and the Iowa State Cyclones.

[1] Blair walked onto the Northeastern Oklahoma A&M football team and was a member of the 1969 Junior College Championship squad.

[4] Blair quickly established himself as one of the top and speediest linebackers in the NFC, earning Pro Bowl honors for 6 consecutive seasons (1977–1982)[5] and making the NFL All-Rookie Team.

Blair recovered five fumbles and intercepted two passes from his linebacker position with Jeff Siemon in the middle and Wally Hilgenberg on the opposite side.

The Vikings defeated the Rams again in the NFC championship game of the 1976–77 NFL playoffs, when Blair recovered two fumbles.

He said that he was told by his neurologist that the symptoms were likely the result of chronic traumatic encephalopathy (CTE), a degenerative brain disease linked to concussions.