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NOV 23 1975, NOV 24 1975; Denver Broncos (Action); About to get a helmet implant; Linebacker Randy Gradishar (52) of the Denver Broncos drives into quarterback Steve Bartowski and forces a fumble that was picked up by tackle Paul Smith and returned 38 yards for a touchdown in the first period of Sunday's Broncos-Atlanta Falcons game in Atlanta. The Falcons came from behind to defeat the Broncos by 35-21.; (Photo By The Denver Post via Getty Images)

NOV 23 1975, NOV 24 1975; Denver Broncos (Action); About to get a helmet implant; Linebacker Randy Gradishar (52) of the Denver Broncos drives into quarterback Steve Bartowski and forces a fumble that was picked up by tackle Paul Smith and returned 38 yards for a touchdown in the first period of Sunday's Broncos-Atlanta Falcons game in Atlanta. The Falcons came from behind to defeat the Broncos by 35-21.;  (Photo By The Denver Post via Getty Images)