text: The latter fact was perhaps most prominent when in 1979 â `` 80 , first-year phenom Wayne Gretzky was not eligible to win the Calder Trophy despite scoring 137 points ( the previous rookie record at the time being 95 ) , because he had played a full season the previous year in the World Hockey Association .
simplified: The latter fact was perhaps most prominent when in 1979 â `` 80 , first-year phenom Wayne Gretzky was not eligible to win the Calder Trophy despite scoring 137 points ( the previous rookie record at the time being 95 ) , due to him playing a full season the previous year in the World Hockey Association .