Original: In 1970 , he did the unthinkable , doubling his scoring total from the previous season to score 120 points , six shy of the league record and becoming the first ( and to date , only ) defenceman in history to win the Art Ross Trophy as the league 's leading scorer .
Simplified: In the 1969-70 season , he scored 120 points and became the only defenseman in history to win the Art Ross Trophy , for leading the league in scoring .