Les Costello
L · Born February 16, 1928
Age in each postseason series
- 1948 Semifinals (March 24, 1948), Maple Leafs vs Bruins 4–1: 20 years, 37 days
- 1948 Stanley Cup Final (April 7, 1948), Maple Leafs vs Red Wings 4–0: 20 years, 51 days
- 1950 Semifinals (March 28, 1950), Maple Leafs vs Red Wings 3–4: 22 years, 40 days
Age in each season
- 1947-48 (Maple Leafs): 19 years, 227 days to 20 years, 74 days
- 1948-49 (Maple Leafs): 20 years, 228 days to 21 years, 73 days
- 1949-50 (Maple Leafs): 21 years, 227 days to 22 years, 73 days