Mark Defer is a racing driver who competes in SCCA Majors. Defer has recorded 0 wins and 4 podiums from 12 starts.[1]
A Racer Rating of 995 ranks Defer 29519th of 38,983 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.
| 2025-01-12 | Sebring International Raceway FC | P3 | +45 |
| 2025-01-11 | Sebring International Raceway FC | P4 | −13 |
| 2025-01-05 | HMS Road Course FC | P4 | −2 |
| 2025-01-04 | HMS Road Course FC | P3 | +58 |
| Rating won | Race | Series | Finish |
|---|---|---|---|
| +59 | Sebring International Raceway 2024 | SCCA Majors | P3 |
| +58 | HMS Road Course 2025 | SCCA Majors | P3 |
| +45 | Sebring International Raceway 2025 | SCCA Majors | P3 |
| +41 | Sebring International Raceway 2023 | SCCA Majors | P3 |
| +14 | Sebring International Raceway 2022 | SCCA Majors | P4 |
| Season | Series | Team | Races | Wins | Podiums | DNFs | Poles | Points | Pos | Gain/Loss | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | ▸SCCA Majors | 4 | 0 | 2 | 0 | 0 | 0 | P5 | +87 | 995 | |
| 2024 | ▸SCCA Majors | 2 | 0 | 1 | 0 | 0 | 0 | P13 | +64 | 908 | |
| 2023 | ▸SCCA Majors | 2 | 0 | 1 | 0 | 0 | 0 | P20 | −40 | 845 | |
| 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 |
|---|---|---|---|---|---|
| 🇺🇸 Robert Allaer | 1,539 | 11 | 1 | 10 | 9% |
| 🏳️ Chris Scharnow | 3,054 | 10 | 3 | 7 | 30% |
| 🏳️ Douglas Rocco | 805 | 8 | 7 | 1 | 88% |
| 🏳️ Tim Minor | 2,031 | 4 | 1 | 3 | 25% |
| 🇺🇸 Robert Wright | 1,543 | 4 | 1 | 3 | 25% |
| 🏳️ Hartley MacDonald | 812 | 4 | 2 | 2 | 50% |
| 🏳️ Peter Vajda | 660 | 4 | 4 | 0 | 100% |
| 🏳️ Arshia Akhtar | 424 | 4 | 4 | 0 | 100% |
| 🇺🇸 Nolan AllaerFIA Silver | 3,066 | 3 | 0 | 3 | 0% |
| 🏳️ Dean Kiriluk | 1,794 | 3 | 0 | 3 | 0% |
| 🏳️ Trent WalkoHigher-rated | 2,850 | 1 | 1 | 0 | 100% |
| 🏳️ Joe ColasaccoHigher-rated, 2× champion | 2,560 | 2 | 1 | 1 | 50% |
| 🇺🇸 Billy JohnsonFIA Gold, 1× champion | 2,200 | 1 | 1 | 0 | 100% |
| # | Driver | Series | Rating |
|---|---|---|---|
| 29,509 | 🇺🇸 Greg Williams | BMW CCA Club Racing | 995 |
| 29,510 | 🏳️ J Young | PCA Club Racing | 995 |
| 29,511 | 🏳️ John Babineau | SCCA Regionals | 995 |
| 29,512 | 🏳️ Joshua Bowers | SCCA Regionals | 995 |
| 29,513 | 🏳️ Kenneth Russo | SVRA | 995 |
| 29,514 | 🏳️ Kevin Butler | American Endurance Racing | 995 |
| 29,515 | 🏳️ Kevin Gibson | NASA | 995 |
| 29,516 | 🏳️ Laurin Brailler | NASA | 995 |
| 29,517 | 🏳️ Marc DE Voe | PCA Club Racing | 995 |
| 29,518 | 🇺🇸 Mark Davis | SVRA | 995 |
| 29,519 | 🏳️ Mark Defer | SCCA Majors | 995 |
| 29,520 | 🏳️ Mark Nasrallah | SCCA Regionals | 995 |
| 29,521 | 🏳️ Mark Stefka | SCCA Majors | 995 |
| 29,522 | 🏳️ Michael Lowe | SCCA Majors | 995 |
| 29,523 | 🏳️ Mike Hoke | PCA Club Racing | 995 |
| 29,524 | 🏳️ Nick Finburgh | Velocity Invitational | 995 |
| 29,525 | 🏳️ R.STAFFORD /C.FRIEDMAN | PCA Club Racing | 995 |
| 29,526 | 🏳️ Richard Spaeth | NASA | 995 |
| 29,527 | 🏳️ Sayo Haraishi | SCCA Regionals | 995 |
| 29,528 | 🏳️ Scott Barksdale | SCCA Runoffs | 995 |
| 29,529 | 🏳️ Stephen Lamana | SCCA Majors | 995 |
Mark Defer is a racing driver who competes in SCCA Majors. Defer has recorded 0 wins and 4 podiums from 12 starts.[1]
A Racer Rating of 995 ranks Defer 29519th of 38,983 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.