| Full name: | John Peter Sierra |
| Born: | 26th March 1922, Mossel Bay, Cape Province, South Africa |
| Died: | 17th May 2000, East London, Cape Province, South Africa |
| Batting: | Right-hand batter |
| Bowling: | Right-arm off-break |
| Teams: | Western Province (Main FC: 1947/48); Rhodesia (Main FC: 1950/51); All teams |
| Lists of matches and more detailed statistics | |
| First-Class Career Batting and Fielding (1947/48-1950/51) | ||||||||||
| M | I | NO | Runs | HS | Ave | 100 | 50 | Ct | ||
| Overall | 6 | 11 | 0 | 216 | 62 | 19.63 | 0 | 2 | 4 | |
| First-Class Career Bowling (1950/51) | ||||||||||
| Balls | Mdns | Runs | Wkts | BB | Ave | 5wI | 10wM | SRate | Econ | |
| Rhodesia | 8 | 0 | 7 | 0 | 0-7 | 5.25 | ||||