Another number with just one choice, #12 belongs to a three time cup winner.
Ron Stewart (1952-65)
Stats: 838GP - 186G - 182A - 368Pts - 413PM
Awards: Stanley Cup - 1962, 63, 64
Stewart joined the Leafs as a centre in the 52-53 season, and would go on to play 13 seasons in the blue and white. He won three Stanley Cups with the Maple Leafs in the 60’s, and never played fewer than 51 games in a season, while averaging over 60 for his Leafs career.