Per AI Search Assist
.......Coach............%...Win..Loss..Tie1. John Madden .759 103 32 7
2. Vince Lombardi .750 105 35 6
3. George Halas .682 318 148 31
4. Don Shula .677 328 156 6
5. Paul Brown .672 213 104 9
6. Tony Dungy .668 139 69 0
7. Andy Reid .649 278 150 1
8. Bill Belichick .647 302 165 0
9. Mike Tomlin .643 164 91 1
10. Sean Payton .634 152 89 0
11. Curly Lambeau .631 226 132 22
12. Bill Cowher .623 149 90 1
Per AI Search Assist, Adjusted For Calculation Errors
......Coach............%... (Wins/Total Games)1. John Madden .725 (103/142)
2. Vince Lombardi ..719 (105/146)
3. Don Shula .669 (328/490) This is actually the best overall.
4. Tony Dungy .668 (139/208)
5. Paul Brown .653 (213/326)
6. Andy Reid .648 (278/429)
7. Bill Belichick .647 (302/467)
8. Mike Tomlin .640 (164/256)
9. George Halas .634 (318/497)
10. Sean Payton .631 (152/241)
11. Bill Cowher .621 (149/240)
12. Bill Walsh .618 (102/165)