Jeffrey Diffenderfer is a racing driver who last raced in NASA for Mazda Miata. Diffenderfer has recorded 0 wins and 0 podiums from 21 starts.[1]
A Racer Rating of 648 ranks Diffenderfer 34630th of 37,606 indexed drivers, on an Elo scale where the strongest reach the low five figures. It is built from every indexed race in the driver's file, decayed for time since their last race.
| 2011-04-10 | Mid-Ohio Sports Car Course · PTE | P4 | −8 |
| 2011-04-09 | Mid-Ohio Sports Car Course · PTE | P4 | −8 |
| Season | Series | Team | Races | Wins | Podiums | DNFs | Poles | Points | Pos | Gain/Loss | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2011 | ▸NASA | Mazda Miata | 2 | 0 | 0 | 0 | 0 | 0 | P32 | −15 | 648 |
| 2009 | ▸NASA | Saginaw MI | 5 | 0 | 0 | 0 | 0 | 0 | P74 | +199 | 664 |
| 2008 | ▸NASA | Fireball Racing | 4 | 0 | 0 | 0 | 0 | 0 | P241 | −254 | 465 |
| 2007 | ▸NASA | Fireball Racing | 3 | 0 | 0 | 0 | 0 | 0 | P151 | −20 | 719 |
| 2006 | ▸NASA | Miata | 7 | 0 | 0 | 0 | 0 | 0 | P35 | −262 | 738 |
| Rival | Rating | Raced | Ahead | Behind | Record |
|---|---|---|---|---|---|
| 🏳️ Jeff Davidson | 665 | 17 | 5 | 12 | 29% |
| 🏳️ Dan Fargo | 1,140 | 13 | 2 | 11 | 15% |
| 🏳️ Brian Flint | 400 | 11 | 4 | 7 | 36% |
| 🏳️ Brian Murdick | 1,727 | 10 | 0 | 10 | 0% |
| 🏳️ Eric Meyer | 1,245 | 10 | 4 | 6 | 40% |
| 🏳️ David Spencer | 1,640 | 9 | 0 | 9 | 0% |
| 🏳️ Dennis Joynt | 1,585 | 9 | 0 | 9 | 0% |
| 🏳️ John Guthrie | 2,132 | 8 | 0 | 8 | 0% |
| 🏳️ Gary Schultz | 1,452 | 8 | 0 | 8 | 0% |
| 🏳️ Gregory Stasiowski | 1,623 | 7 | 0 | 7 | 0% |
| 🇺🇸 Ryan EllisHIGHER-RATED · 1× CHAMPION | 3,795 | 3 | 1 | 2 | 33% |
| 🏳️ Brian CatesHIGHER-RATED | 2,252 | 2 | 1 | 1 | 50% |
| 🏳️ Randy ShawHIGHER-RATED | 1,978 | 6 | 1 | 5 | 17% |
| # | Driver | Series | Rating |
|---|---|---|---|
| 34,620 | 🏳️ Liam Downey | NASA | 649 |
| 34,621 | 🏳️ Nick Hrycaj | PCA Club Racing | 649 |
| 34,622 | 🏳️ Ron Copeland | SCCA Regionals | 649 |
| 34,623 | 🏳️ Stuart Phillips | NASA | 649 |
| 34,624 | 🇩🇪 Sven Oepen | Nürburgring 24 Hours | 649 |
| 34,625 | 🏳️ William Pepe | SCCA Regionals | 649 |
| 34,626 | 🏳️ Chet Zerlin | SCCA Majors | 648 |
| 34,627 | 🏳️ David Schram | NASA | 648 |
| 34,628 | 🏳️ Elliot Menschik | NASA | 648 |
| 34,629 | 🏳️ Jay R Miller | SCCA Regionals | 648 |
| 34,630 | 🏳️ Jeffrey Diffenderfer | NASA | 648 |
| 34,631 | 🏳️ Michael Wagner | BMW CCA Club Racing | 648 |
| 34,632 | 🏳️ Ronald Bond | SCCA Regionals | 648 |
| 34,633 | 🏳️ Ryan Fant | SCCA Regionals | 648 |
| 34,634 | 🏳️ Scott Clark | SVRA | 648 |
| 34,635 | 🏳️ Tony D'Alessandro | NASA | 648 |
| 34,636 | 🏳️ Wingate Clapper | PCA Club Racing | 648 |
| 34,637 | 🏳️ Alan Purser | American Endurance Racing | 647 |
| 34,638 | 🏳️ Carlos Casabal | PCA Club Racing | 647 |
| 34,639 | 🏳️ Jeffrey Brown | NASA | 647 |
| 34,640 | 🏳️ Larry Svaton | SCCA Majors | 647 |
Jeffrey Diffenderfer is a racing driver who last raced in NASA for Mazda Miata. Diffenderfer has recorded 0 wins and 0 podiums from 21 starts.[1]
A Racer Rating of 648 ranks Diffenderfer 34630th of 37,606 indexed drivers, on an Elo scale where the strongest reach the low five figures. It is built from every indexed race in the driver's file, decayed for time since their last race.