How old were they?

Derrick Harmon

RB · Born April 26, 1963

Age in each playoff game

1. 1984 Divisional (December 29, 1984), 49ers vs Giants 21–10: 21 years, 247 days
2. 1984 Conference Championship (January 6, 1985), 49ers vs Bears 23–0: 21 years, 255 days
3. Super Bowl XIX (January 20, 1985), 49ers vs Dolphins 38–16: 21 years, 269 days
4. 1985 Wild Card (December 29, 1985), 49ers vs Giants 3–17: 22 years, 247 days
5. 1986 Divisional (January 4, 1987), 49ers vs Giants 3–49: 23 years, 253 days

Age in each season

1. 1984 (49ers): 21 years, 128 days to 21 years, 249 days
2. 1985 (49ers): 22 years, 128 days to 22 years, 249 days
3. 1986 (49ers): 23 years, 128 days to 23 years, 249 days