Roy Dunham Mayes
Birthplace: Dixon, California
Born: April 15, 1890
Died: July 8, 1921
Roy Mayes
Roy Dunham Mayes
Birthplace: Dixon, California
Born: April 15, 1890
Died: July 8, 1921
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| Track | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| Tacoma-RC | 0 | 1 | 0 | 0 | 0 | 0 | 0 | NS | 0 |
| Chassis | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| Pope-Hartford | 0 | 1 | 0 | 0 | 0 | 0 | 0 | NS | 0 |
| Engine | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| Pope-Hartford | 0 | 1 | 0 | 0 | 0 | 0 | 0 | NS | 0 |