In the 1964 Tokyo Olympic Games, sprinter Bob Hayes tied the Olympic record on his way to winning the gold medal in the 100-meter dash. Just a few months later, Hayes was dashing past defensive backs as a wide receiver for the Dallas Cowboys. It was a radical idea at the time: taking a world-class sprinter and turning him into a football player. Hayes’s success altered defensive strategy and changed how football was played.

I’ll never forget standing in the locker room with my Division 1 field hockey players and listening to their postgame chatter. I was their new assistant coach, we had just lost our first game, and I was anxious to see how they were doing.