donshula NFL coach who was undefeated in 1972 NFL coach who guided the Dolphins to a perfect season in 1972: 2 wds He coached 526 NFL games Coach of 1972's undefeated Dolphins Coach in six Super Bowls Former Dolphins head All-time winningest N.F.L. coach N.F.L. coach with the most career wins N.F.L. coach who was undefeated in 1972