Dufek, was sought after as a professional athlete in two sports: Dufek was drafted by teams in the National Hockey League, World Hockey Association and National Football League.
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During both of these seasons he was co-captain along with eventual Pro Football Hall of Famer and four-term representative in United States House of Representatives, Steve Largent, the captain of the offensive unit and Keith Simpson, captain of the defensive unit.
Two of Dufek's sons were All-American football players for the Michigan Wolverines: Bill and Don Dufek, Jr. - who was one of the original members of the Seattle Seahawks.
Don Quixote | Don Giovanni | Don Cherry | Don | Don (honorific) | Don Cheadle | Rostov-on-Don | Don Williams | Don Juan | Don Knotts | Don Imus | Don Carlos | Don Rickles | Don Omar | Don Henley | Salesians of Don Bosco | Don Johnson | Don Drysdale | Don Pasquale | Don Messick | Don Bluth | Don King (boxing promoter) | Don King | Don Shula | Don LaFontaine | Don Cherry (jazz) | Don Burrows | Don't Look Now | Don Siegel | Don McLean |
After the game, Coach Oosterbaan cited Koceski as one of the standouts of the game for Michigan along with Don Dufek, Al "Brick" Wahl, and Chuck Ortmann.