Extra Championship
SummaryStatisticsTeamsPositionsTeam MatesYear by Year
| Name | John Walker |
| Country |  Australia |
| First Race | Australian Grand Prix 04/03/1957 |
| Last Race | Australian Grand Prix 04/03/1957 |
| Best Result | 23rd – Australian Grand Prix 04/03/1957 |
| Races | 1 |
| Victories | 0 |
| Poles | 0 |
| Fastest Laps | 0 |
| Podiums | 0 |
| Laps | 0 |
| Laps Led | 0 |
MG (1957)
| DNF | 1 Time |
