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| 4/29/2021 | US 30 Speedway - Columbus, NE Weekly Racing IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Rudy Brunkhorst (IMCA Northern SportMod) | 6th | - | - | 14th |
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| 5/23/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds | Results | | Rudy Brunkhorst (B Modifieds) | 3rd | - | - | 2nd |
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| 6/6/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds, Vintage Modifieds | Results | | Rudy Brunkhorst (B Modifieds) | DNS | - | - | 2nd |
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| 6/13/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds, Vintage Full Body Stock Cars | Results | | Rudy Brunkhorst (B Modifieds) | 1st | - | - | 2nd |
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| 6/20/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds | Results | | Rudy Brunkhorst (B Modifieds) | 2nd | - | - | 2nd |
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| 6/27/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds | Results | | Rudy Brunkhorst (B Modifieds) | 1st | - | - | 1st |
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| 7/4/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds | Results | | Rudy Brunkhorst (B Modifieds) | 1st | - | - | 1st |
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| 7/18/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds | Results | | Rudy Brunkhorst (B Modifieds) | 3rd | - | - | 3rd |
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| 7/25/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds, Vintage Modifieds | Results | | Rudy Brunkhorst (B Modifieds) | 2nd | - | - | 1st |
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| 7/29/2021 | US 30 Speedway - Columbus, NE KIDS NIGHT IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Rudy Brunkhorst (IMCA Northern SportMod) | 5th | - | - | 8th |
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| 8/1/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds | Results | | Rudy Brunkhorst (B Modifieds) | 1st | - | - | 1st |
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| 8/8/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds | Results | | Rudy Brunkhorst (B Modifieds) | 1st | - | - | 2nd |
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| 8/15/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds | Results | | Rudy Brunkhorst (B Modifieds) | 2nd | - | - | 1st |
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| 8/19/2021 | US 30 Speedway - Columbus, NE Weekly Racing IMCA Late Models, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Rudy Brunkhorst (IMCA Northern SportMod) | 2nd | - | - | 6th |
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| 9/5/2021 | Boone Speedway - Boone, IA Wild Rose Casino Prelude to the Super Nationals IMCA Northern SportMod, IMCA Hobby Stock, IMCA Sport Compact, Pro Dwarf, IMCA Mod Lite | Results | | Rudy Brunkhorst (IMCA Northern SportMod) | 7th | - | DNS | - |
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| 9/6/2021 | Boone Speedway - Boone, IA 2021 IMCA Speedway Motors Super Nationals Fueled by Casey’s IMCA Late Models, IMCA Northern SportMod, IMCA Hobby Stock | Results | | Rudy Brunkhorst (IMCA Northern SportMod) | 5th | - | - | - |
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| 9/7/2021 | Boone Speedway - Boone, IA 2021 IMCA Speedway Motors Super Nationals Fueled by Casey’s Vintage Modifieds, Generic 1, IMCA Northern SportMod, IMCA Hobby Stock, IMCA Sport Compact | Results | | Rudy Brunkhorst (Vintage Modifieds) | 10th | - | - | - | | Rudy Brunkhorst (IMCA Northern SportMod) | 8th (DNF) | - | - | - |
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| 9/17/2021 | US 30 Speedway - Columbus, NE 25th Annual Abe Lincoln Memorial Vintage Full Body Stock Cars, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA RaceSaver Sprint Car | Results | | Rudy Brunkhorst (IMCA Northern SportMod) | 7th | - | 11th | - |
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| 9/18/2021 | US 30 Speedway - Columbus, NE 25th Annual Abe Lincoln Memorial Vintage Modifieds, IMCA Late Models, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Rudy Brunkhorst (IMCA Northern SportMod) | 4th | - | 11th (DNF) | - |
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