Mark Defer is a racing driver who competes in SCCA Majors. Defer has recorded 1 win and 6 podiums from 14 starts.[1]
A Racer Rating of 1,191 ranks Defer 25114th of 40,308 indexed drivers, on an Elo scale where the strongest reach the high 8,000s. It is built from every indexed race in the driver's file.
| 2025-02-09 | Sebring International Raceway FC | P1 | +134 |
| 2025-02-08 | Sebring International Raceway FC | P2 | +46 |
| 2025-01-12 | Sebring International Raceway FC | P3 | +45 |
| 2025-01-11 | Sebring International Raceway FC | P4 | −14 |
| 2025-01-05 | HMS Road Course FC | P4 | −2 |
| Rating won | Race | Series | Finish |
|---|---|---|---|
| +134 | Sebring International Raceway 2025 | SCCA Regionals | P1 |
| +63 | Sebring International Raceway 2024 | SCCA Majors | P3 |
| +59 | HMS Road Course 2025 | SCCA Majors | P3 |
| +46 | Sebring International Raceway 2025 | SCCA Regionals | P2 |
| +45 | Sebring International Raceway 2025 | SCCA Majors | P3 |
| Season | Series | Team | Races | Wins | Podiums | DNFs | Poles | Points | Pos | Gain/Loss | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | ▸SCCA Majors | 4 | 0 | 2 | 0 | 0 | 0 | P5 | +88 | 1,191 | |
| ▸SCCA Regionals | 2 | 1 | 2 | 0 | 0 | 0 | P15 | +180 | |||
| 2024 | ▸SCCA Majors | 2 | 0 | 1 | 0 | 0 | 0 | P13 | +71 | 923 | |
| 2023 | ▸SCCA Majors | 2 | 0 | 1 | 0 | 0 | 0 | P20 | −33 | 852 | |
| 2022 | ▸SCCA Majors | 1 | 0 | 0 | 0 | 0 | 0 | P16 | +14 | 885 | |
| 2021 | ▸SCCA Majors | 2 | 0 | 0 | 0 | 0 | 0 | P25 | −479 | 871 | |
| ▸SCCA Runoffs | 1 | 0 | 0 | 0 | 0 | 0 | — | +8 |
| Rival | Rating | Raced | Ahead | Behind | Record |
|---|---|---|---|---|---|
| 🏳️ Chris Scharnow | 2,748 | 12 | 4 | 8 | 33% |
| 🇺🇸 Robert Allaer | 1,613 | 11 | 1 | 10 | 9% |
| 🏳️ Douglas Rocco | 821 | 8 | 7 | 1 | 88% |
| 🏳️ Tim Minor | 2,079 | 4 | 1 | 3 | 25% |
| 🇺🇸 Robert Wright | 1,479 | 4 | 1 | 3 | 25% |
| 🏳️ Hartley MacDonald | 906 | 4 | 2 | 2 | 50% |
| 🏳️ Peter Vajda | 668 | 4 | 4 | 0 | 100% |
| 🏳️ Arshia Akhtar | 439 | 4 | 4 | 0 | 100% |
| 🇺🇸 Nolan AllaerFIA Silver | 3,263 | 3 | 0 | 3 | 0% |
| 🏳️ Dean Kiriluk | 1,910 | 3 | 0 | 3 | 0% |
| 🏳️ Trent WalkoHigher-rated | 2,851 | 1 | 1 | 0 | 100% |
| 🏳️ Joe ColasaccoHigher-rated, 2× champion | 2,650 | 2 | 1 | 1 | 50% |
| 🇺🇸 Billy JohnsonFIA Gold, 1× champion | 2,588 | 1 | 1 | 0 | 100% |
| # | Driver | Series | Rating |
|---|---|---|---|
| 25,104 | 🏳️ Tim Rosengrant | PCA Club Racing | 1,192 |
| 25,105 | 🏳️ Warren Turnipseed | NASA | 1,192 |
| 25,106 | 🏳️ Zach Munro | NASA | 1,192 |
| 25,107 | 🏳️ Cody Poage | NASA | 1,191 |
| 25,108 | 🏳️ Dunno Who | American Endurance Racing | 1,191 |
| 25,109 | 🏳️ Eric Allen | PCA Club Racing | 1,191 |
| 25,110 | 🏳️ Eric Oviatt | PCA Club Racing | 1,191 |
| 25,111 | 🏳️ Gregory Neuwirth | NASA | 1,191 |
| 25,112 | 🏳️ Jon Merti | American Endurance Racing | 1,191 |
| 25,113 | 🇦🇷 José Otero | TC Pista Mouras | 1,191 |
| 25,114 | 🏳️ Mark Defer | SCCA Majors | 1,191 |
| 25,115 | 🇦🇷 Pablo Cufre | TC Pista Mouras | 1,191 |
| 25,116 | 🏳️ Ric Baribeault | SVRA | 1,191 |
| 25,117 | 🏳️ Steven Clemons Jr | SCCA Majors | 1,191 |
| 25,118 | 🏳️ Steven W Thayer | PCA Club Racing | 1,191 |
| 25,119 | 🇺🇸 Stuart Robinson | NASA | 1,191 |
| 25,120 | 🏳️ Travis Okulski | American Endurance Racing | 1,191 |
| 25,121 | 🏳️ Travis Tidball | NASA | 1,191 |
| 25,122 | 🏳️ Bruce McPherson | PCA Club Racing | 1,190 |
| 25,123 | 🏳️ Bryan Quance | SCCA Majors | 1,190 |
| 25,124 | 🏳️ Charles Livingston | SVRA | 1,190 |
Mark Defer is a racing driver who competes in SCCA Majors. Defer has recorded 1 win and 6 podiums from 14 starts.[1]
A Racer Rating of 1,191 ranks Defer 25114th of 40,308 indexed drivers, on an Elo scale where the strongest reach the high 8,000s. It is built from every indexed race in the driver's file.