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| 4/2/2021 | Humboldt Speedway - Humboldt, KS Humboldt Speedway Weekly Racing Series Factory Stocks, Midwest Modifieds, USRA B-Mods, USRA Tuners | Results | | Jon Westhoff (Midwest Modifieds) | 5th | - | - | 10th (DNF) |
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| 4/30/2021 | Humboldt Speedway - Humboldt, KS Humboldt Speedway Weekly Racing Series Factory Stocks, Midwest Modifieds, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, USRA B-Mods, USRA Tuners | Results | | Jon Westhoff (Midwest Modifieds) | 3rd | - | - | 5th |
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| 5/14/2021 | Humboldt Speedway - Humboldt, KS Humboldt Speedway Weekly Racing Series + Kids Bicycle Races Factory Stocks, Midwest Modifieds, USRA B-Mods, USRA Stock Cars, USRA Tuners | Results | | Jon Westhoff (Midwest Modifieds) | 2nd | - | - | 4th |
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| 6/4/2021 | Humboldt Speedway - Humboldt, KS ASCS Sooner Region + Mod Lites and Humboldt Speedway Weekly Racing Series 360 Sprints - Winged: ASCS Sooner Region Factory Stocks, Midwest Modifieds, 600cc Modifieds, USRA B-Mods, USRA Stock Cars, USRA Tuners | Results | | Jon Westhoff (Midwest Modifieds) | 5th | - | - | 8th |
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| 6/18/2021 | Humboldt Speedway - Humboldt, KS Humboldt Speedway Weekly Racing Series Factory Stocks, Midwest Modifieds, USRA B-Mods, USRA Stock Cars, USRA Tuners | Results | | Jon Westhoff (Midwest Modifieds) | 3rd | - | - | 15th (DNF) |
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| 7/9/2021 | Humboldt Speedway - Humboldt, KS Titan B-Mod Series $1,000 to win, Humboldt Weekly Racing Series USRA B-Mods: Titans B-Mod Series Factory Stocks, Midwest Modifieds, USRA Stock Cars, USRA Tuners | Results | | Jon Westhoff (Midwest Modifieds) | 1st | - | - | 5th |
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| 7/16/2021 | Humboldt Speedway - Humboldt, KS Humboldt Speedway Weekly Racing Series + USRA Modifieds Factory Stocks, Midwest Modifieds, USRA B-Mods, USRA Modifieds, USRA Stock Cars, USRA Tuners | Results | | Jon Westhoff (Midwest Modifieds) | 3rd | - | 2nd | 8th |
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| 7/25/2021 | Humboldt Speedway - Humboldt, KS All Star Sprint Series 410 Sprints - Winged: All Star Circuit of Champions Midwest Modifieds, USRA B-Mods | Results | | Jon Westhoff (Midwest Modifieds) | 4th | - | - | 8th |
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| 7/30/2021 | Humboldt Speedway - Humboldt, KS Humboldt Speedway Weekly Racing Series Factory Stocks, Midwest Modifieds, USRA B-Mods, USRA Stock Cars, USRA Tuners | Results | | Jon Westhoff (Midwest Modifieds) | 1st | - | - | 11th |
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| 8/6/2021 | Humboldt Speedway - Humboldt, KS USMTS $10,000 to win + Humboldt Speedway Weekly Racing Series A Modifieds: USMTS - United States Modified Touring Series Factory Stocks, Midwest Modifieds, USRA B-Mods, USRA Tuners | Results | | Jon Westhoff (Midwest Modifieds) | 3rd | - | - | 3rd |
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| 8/20/2021 | Humboldt Speedway - Humboldt, KS Champ 360 Sprints - Winged: Oil Capital Racing Series Midwest Modifieds, USRA B-Mods, USRA Tuners | Results | | Jon Westhoff (Midwest Modifieds) | 4th | - | - | 17th (DNF) |
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| 8/27/2021 | Humboldt Speedway - Humboldt, KS Humboldt Speedway Weekly Racing Series + Mechanic Races Champ 360 Sprints - Winged, Factory Stocks, Midwest Modifieds, USRA B-Mods, USRA Tuners | Results | | Jon Westhoff (Midwest Modifieds) | 3rd | - | - | 9th |
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| 9/10/2021 | Humboldt Speedway - Humboldt, KS Humboldt Speedway Weekly Racing Series + Powder Puff Factory Stocks, Midwest Modifieds, USRA B-Mods, USRA Stock Cars, USRA Tuners | Results | | Jon Westhoff (Midwest Modifieds) | 2nd | - | - | 16th (DNF) |
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