Norm Duke is one of the greatest champions and clutch performers in the history of bowling. Even in his mid-50s, he’s still throwing clutch strikes to win PBA League matches — and the pressure of team bowling ratchets up the intensity of those shots. And Duke has come through numerous times to win on the PBA Tour, perhaps most memorably when he made the bucket to win one of his U.S. Open titles. But Duke is human, as he showed in Sunday’s final frame of the 2018 United...