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| 5/8/2021 | Wilmot Raceway - Wilmot, WI Lightning Sprints: IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints A Modifieds, Street Stocks, Hornets | Results | | Ernie Herlt (Hornets) | 1st | - | - | 6th |
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| 5/22/2021 | Wilmot Raceway - Wilmot, WI Non Wing Crate Sprints: Wisconsin wingLESS Sprints A Modifieds, Street Stocks, Hornets | Results | | Ernie Herlt (Hornets) | 8th | - | 10th | - |
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| 5/29/2021 | Wilmot Raceway - Wilmot, WI Non Wing Crate Sprints: Wisconsin wingLESS Sprints A Modifieds, Street Stocks, Hornets | Results | | Ernie Herlt (Hornets) | 2nd | - | - | DNS |
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| 6/18/2021 | Wilmot Raceway - Wilmot, WI Non Wing Crate Sprints: Wisconsin wingLESS Sprints A Modifieds, Street Stocks, Hornets | Results | | Ernie Herlt (Hornets) | 2nd | - | - | 3rd |
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| 6/29/2021 | Wilmot Raceway - Wilmot, WI Non Wing Crate Sprints: Wisconsin wingLESS Sprints A Modifieds, Hornets | Results | | Ernie Herlt (Hornets) | 6th | - | - | 5th |
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| 7/24/2021 | Wilmot Raceway - Wilmot, WI Non Wing Crate Sprints: Wisconsin wingLESS Sprints A Modifieds, Street Stocks, Hornets | Results | | Ernie Herlt (Hornets) | 2nd | - | - | 23rd |
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| 7/31/2021 | Wilmot Raceway - Wilmot, WI Lightning Sprints: IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints A Modifieds, Hornets | Results | | Ernie Herlt (Hornets) | 4th | - | - | 4th |
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| 8/14/2021 | 141 Speedway - Maribel, WI Mechanics Races / Triple Creek Series $1,000.00 to Win Stock Cars / CC #14 Stock Cars, Sportsmans, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | Ernie Herlt (Sport Compact) | 10th | - | 4th | 12th |
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| 8/20/2021 | Wilmot Raceway - Wilmot, WI Kenosha County Fair Races plus Monster Truck Demo and Fireworks 410 Sprints - Winged, A Modifieds, Street Stocks, Hornets, Lightning Sprints, Non Wing Crate Sprints | Results | | Ernie Herlt (Hornets) | DNS | - | 10th | - |
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| 9/4/2021 | Wilmot Raceway - Wilmot, WI Wilmot Championship Night Lightning Sprints: IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints A Modifieds, Street Stocks, Hornets | Results | | Ernie Herlt (Hornets) | 3rd | - | - | 3rd |
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| 9/11/2021 | Wilmot Raceway - Wilmot, WI Non Wing Crate Sprints: Wisconsin wingLESS Sprints A Modifieds, Street Stocks, Dirt Late Models, Hornets | Results | | Ernie Herlt (Hornets) | 4th | - | - | 9th |
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| 9/18/2021 | Wilmot Raceway - Wilmot, WI 410 Sprints - Winged: IRA Interstate Racing Association Lightning Sprints: IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints Hornets | Results | | Ernie Herlt (Hornets) | 3rd | - | - | 2nd |
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| 9/24/2021 | 141 Speedway - Maribel, WI 12th Annual Treek Strong Creek Classic / "Blue" Race $1,000.00 to Win IMCA Modifieds Stock Cars, Sportsmans, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | Ernie Herlt (Sport Compact) | 6th | - | 3rd | 16th |
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| 9/25/2021 | 141 Speedway - Maribel, WI 12th Annual Treek Strong Creek Classic Stock Cars, Sportsmans, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | Ernie Herlt (Sport Compact) | 2nd | - | - | 11th |
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