Isaac Phillips Fetterman
Birthplace: Mt. Lebanon, Pennsylvania
Born: September 1, 1887
Died: December 5, 1924
I. P. Fetterman
Isaac Phillips Fetterman
Birthplace: Mt. Lebanon, Pennsylvania
Born: September 1, 1887
Died: December 5, 1924
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| Track | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| Chicago-BO | Non | points | race | only | |||||
| Cincinnati-BO | Non | points | race | only | |||||
| Indianapolis | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 0 |
| Kansas City | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 0 |
| Sheepshead Bay | Non | points | race | only | 0 | ||||
| Uniontown | 10 | 2 | 2 | 2 | 3 | 1 | 2 | 0 |
| Chassis | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| Duesenberg | 4 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | |
| Hudson | Entered | as relief | driver | did not | appear | in race | |||
| Peerless | 3 | 1 | 0 | 0 | 2 | 0 | 1 | 0 | |
| Premier | 4 | 0 | 1 | 2 | 1 | 0 | 0 | 0 | |
| Unknown | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 |
| Engine | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| Duesenberg | 4 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | |
| Hudson | Entered | as relief | driver | did not | appear | in race | |||
| Peerless | 3 | 1 | 0 | 0 | 2 | 0 | 1 | 0 | |
| Premier | 4 | 0 | 1 | 2 | 1 | 0 | 0 | 0 | |
| Unknown | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 |