Bobby Orr is a hockey immortal, having been inducted into the Hockey Hall of Fame in 1979. He is widely considered to be one of the greatest players of all time and was the first defenseman to score more than 100 points in a season. He played for the Boston Bruins from 1966 to 1976 and won two Stanley Cups with them. He also won the Hart Memorial Trophy as the NHL's most valuable player three times and the Norris Trophy as the league's best defenseman eight times. His initials, ORR, are the answer to the crossword clue.