Alfonso Diaz is a racing driver from Puerto Rico who competes in SCCA Regionals. Diaz has recorded 3 wins and 10 podiums from 26 starts.[1]
A Racer Rating of 2,869 ranks Diaz 9305th 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.
| 2026-06-28 | Daytona International Speedway ITS | P4 | −68 |
| Rating won | Race | Series | Finish |
|---|---|---|---|
| +145 | Road America 2025 | Mustang Challenge | P1 |
| +145 | Circuit of The Americas (MC) 2025 | Mustang Challenge | P1 |
| +143 | Indianapolis Motor Speedway RC 2024 | Mustang Challenge | P1 |
| +126 | Indianapolis Motor Speedway RC 2024 | Mustang Challenge | P2 |
| +126 | Sebring International Raceway 2025 | Mustang Challenge | P2 |
| Season | Series | Team | Races | Wins | Podiums | DNFs | Poles | Points | Pos | Gain/Loss | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | ▸SCCA Regionals | 1 | 0 | 0 | 0 | 0 | 0 | P35 | −68 | 2,869 | |
| 2025 | ▸Mustang Challenge | TechSport | 12 | 2 | 8 | 0 | 0 | 0 | P3 | +551 | 2,937 |
| 2024 | ▸TGRNA GR Cup North America | TechSport Racing | 11 | 0 | 0 | 0 | 0 | 0 | P21 | +1,036 | 2,386 |
| ▸Mustang Challenge | TechSport Racing | 2 | 1 | 2 | 0 | 0 | 0 | P7 | +269 |
| Rival | Rating | Raced | Ahead | Behind | Record |
|---|---|---|---|---|---|
| 🇺🇸 Alex BachouraFIA Bronze | 3,161 | 14 | 6 | 8 | 43% |
| 🇺🇸 Thomas TaitFIA Bronze | 2,598 | 14 | 10 | 4 | 71% |
| 🇺🇸 Stephen VajdaFIA Bronze | 2,348 | 14 | 10 | 4 | 71% |
| 🇺🇸 Zachry LeeFIA Bronze | 3,285 | 12 | 7 | 5 | 58% |
| 🇺🇸 Paolo Salvatore | 2,419 | 12 | 8 | 4 | 67% |
| 🇺🇸 Joseph Dederichs | 2,032 | 12 | 10 | 2 | 83% |
| 🇺🇸 Westin WorkmanFIA Silver | 4,397 | 11 | 0 | 11 | 0% |
| 🇺🇸 Gresham WagnerFIA Silver | 3,916 | 11 | 0 | 11 | 0% |
| 🇺🇸 Spike Kohlbecker | 3,884 | 11 | 0 | 11 | 0% |
| 🇺🇸 Jaxon Bell | 3,877 | 11 | 1 | 10 | 9% |
| 🇺🇸 Ford KochHigher-rated | 3,940 | 9 | 1 | 8 | 11% |
| 🇨🇦 Braydon ArthurFIA Silver | 3,799 | 7 | 2 | 5 | 29% |
| 🇺🇸 Devin AndersonHigher-rated | 3,652 | 9 | 1 | 8 | 11% |
| # | Driver | Series | Rating |
|---|---|---|---|
| 9,295 | 🇨🇭 Michael Sauter | ADAC Formula 4 | 2,871 |
| 9,296 | 🏳️ Miles Bromley | USF Pro 2000 | 2,871 |
| 9,297 | 🇦🇷 Nicolás Pezzucchi | TC Pick Up | 2,871 |
| 9,298 | 🇯🇵 Yasuhiro Takasaki | Super GT | 2,871 |
| 9,299 | 🇵🇷 Carlos Conde | Pro Mazda Championship | 2,870 |
| 9,300 | 🇺🇸 Christopher Bellomo | Porsche Carrera Cup NA | 2,870 |
| 9,301 | 🇦🇹 David Griessner | Nürburgring Langstrecken-Serie | 2,870 |
| 9,302 | 🇸🇪 Elliot Kaczynski | Spanish F4 | 2,870 |
| 9,303 | 🇫🇮 Leevi Vappula | Prototype Cup Germany | 2,870 |
| 9,304 | 🏳️ Matthew Dirks | SCCA Majors | 2,870 |
| 9,305 | 🇵🇷 Alfonso Diaz | SCCA Regionals | 2,869 |
| 9,306 | 🏳️ Max Nufer | Trans-Am TA2 | 2,869 |
| 9,307 | 🏳️ Philip Holtrust | IMSA Pilot Challenge | 2,869 |
| 9,308 | 🇺🇸 Todd Peck | NASCAR Truck | 2,869 |
| 9,309 | 🇪🇸 Zach Fourie | US F4 | 2,869 |
| 9,310 | 🇪🇸 Alex Riberas Bou | IMSA WeatherTech | 2,868 |
| 9,311 | 🏳️ Aryton Grim | NASA | 2,868 |
| 9,312 | 🏳️ Dave Kunicki | Trans-Am TA2 | 2,868 |
| 9,313 | 🏳️ Rickard Nilsson | Nürburgring Langstrecken-Serie | 2,868 |
| 9,314 | 🇪🇸 Belén García Espinar | Prototype Cup Germany | 2,867 |
| 9,315 | 🏳️ Collin Lloyd | SKUSA SuperNationals | 2,867 |
Alfonso Diaz is a semi-professional racing in national solo sprint championships in the United States. He competes primarily in the Mustang Challenge, where he drives a Ford Mustang Dark Horse R in the DHL class for TechSport Racing, and races the Toyota GR86 cup car in the TGRNA GR Cup North America Am class, also for TechSport Racing. His record across three seasons spans 26 starts from 2024 to 2026.[1]
In the Mustang Challenge, Diaz has taken three wins and ten podiums across 14 starts through 2024 and 2025, establishing himself as a front-runner in the DHL class. He runs closely with Alex Bachoura, the 2025 Mustang Challenge DHL champion; the two are matched in head-to-head racing. Against Thomas Tait, the 2026 champion, Diaz typically finishes ahead. In the TGRNA GR Cup North America, he competed across 11 starts in 2024 and finished 21st in the championship standings, meeting stronger fields that included entry-level professionals such as Ford Koch and Jaxon Bell, each of whom he has beaten once. His single SCCA Regionals start came in 2026.[2]
Diaz races in a multiclass field in the Mustang Challenge and encounters graded professionals regularly in the TGRNA series and SCCA Regionals. His consistent podium finishes and wins in Mustang Challenge place him ahead of the majority of his regular opposition, though he sits in the middle tier of a field that reaches entry-level professional level.