Among Patrick's contributions to hockey were the blue line, the penalty shot, the boarding penalty, and the raising of the stick when a goal is scored. Frank introduced the playoff system to hockey and other sports. He and his brother Lester came up with players' numbers. He also made a prophecy: "I dream of the day that teams will dress two goaltenders for each game." This became a reality in the NHL in 1964–65. In all Frank is credited with 22 changes that remain in the NHL rulebook to this day,
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