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| 5/1/2021 | Merritt Speedway - Merritt, MI Opening Night at Merritt Speedway DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, Stock Cars, Sportsmans, B Modifieds, Mini Wedge, Mini Outlaws | Results | | Nathan Schmitter (Factory Stocks) | 9th | - | DNS | - |
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| 5/8/2021 | Silver Bullet Speedway - Owendale, MI Best Looking Car Asphalt Mini Stocks, Hobby Stocks, Stock Cars, Sportsmans, B Modifieds, Mini Wedge | Results | | Nathan Schmitter (Hobby Stocks) | 6th | - | 3rd | 12th |
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| 5/14/2021 | Tri-City Motor Speedway - Auburn, MI Allstar Performance Challenge Race #1 & $1,500 to win PRO STOCK NIGHT DIRTcar Late Models: Allstar Performance Challenge Series Factory Stocks, Hobby Stocks, Sportsmans, A Modifieds, Street Stocks, Dirt Late Models, Mini Wedge, Mini Outlaws, IMCA Modified | Results | | Nathan Schmitter (Factory Stocks) | 11th | - | 8th | - |
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| 5/21/2021 | Tri-City Motor Speedway - Auburn, MI 360 Sprints - Winged: GLSS-Great Lakes Super Sprints Lightning Sprints: Great Lakes Lightning Sprints DIRTcar Late Models, Factory Stocks, Hobby Stocks, Mini Wedge, Mini Outlaws | Results | | Nathan Schmitter (Factory Stocks) | 8th | - | - | - |
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| 5/22/2021 | Crystal Motor Speedway - Crystal, MI Full Show Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Junior 1 Lites Dirt Karts, Dirt Pro Trucks, Mini Wedge, Sport Compact | Results | | Nathan Schmitter (Street Stocks) | 4th | - | - | 19th |
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| 5/29/2021 | Crystal Motor Speedway - Crystal, MI 360 Sprints - Winged: GLSS-Great Lakes Super Sprints Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Dirt Pro Trucks, Mini Outlaws, Sport Compact | Results | | Nathan Schmitter (Street Stocks) | 2nd | - | - | 17th |
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| 5/30/2021 | Crystal Motor Speedway - Crystal, MI 410 Sprints - Non-Winged: Great Lakes Traditional Sprints Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Dirt Pro Trucks, Sport Compact | Results | | Nathan Schmitter (Street Stocks) | 8th | - | 12th (DNF) | - |
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| 6/12/2021 | Crystal Motor Speedway - Crystal, MI Lightning Sprints: Great Lakes Lightning Sprints Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Dirt Pro Trucks, Sport Compact | Results | | Nathan Schmitter (Street Stocks) | - | - | - | - |
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| 6/19/2021 | Crystal Motor Speedway - Crystal, MI Full Show - Sponsored by Carson City Lumber Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Dirt Pro Trucks, Sport Compact | Results | | Nathan Schmitter (Street Stocks) | 5th | - | 9th | - |
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| 7/2/2021 | Tri-City Motor Speedway - Auburn, MI ALLSTAR PERFORMANCE CHALLENGE SERIES RACES DIRTcar Late Models: Allstar Performance Challenge Series Factory Stocks, Hobby Stocks, Sportsmans, Mini Wedge, Mini Outlaws, IMCA Modified | Results | | Nathan Schmitter (Factory Stocks) | 9th | - | 15th | - |
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| 7/17/2021 | Crystal Motor Speedway - Crystal, MI YES 2 KIDS - Autographs from 6:00-7:00 p.m. Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Junior 1 Lites Dirt Karts, Dirt Pro Trucks, Mini Wedge, Sport Compact | Results | | Nathan Schmitter (Street Stocks) | 9th (DNF) | - | 6th | - |
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| 7/31/2021 | Crystal Motor Speedway - Crystal, MI Lightning Sprints: Great Lakes Lightning Sprints Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Junior 1 Lites Dirt Karts, Dirt Pro Trucks, Mini Wedge, Sport Compact | Results | | Nathan Schmitter (Street Stocks) | 7th | - | 6th | - |
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| 8/14/2021 | Crystal Motor Speedway - Crystal, MI G.L.O.W. Vintage Modifieds - Sponsored by Engine Pro Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Junior 1 Lites Dirt Karts, Dirt Pro Trucks, Mini Wedge, Sport Compact | Results | | Nathan Schmitter (Street Stocks) | 7th | - | 7th | - |
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| 8/21/2021 | Crystal Motor Speedway - Crystal, MI Full Show Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Junior 1 Lites Dirt Karts, Dirt Pro Trucks, Mini Wedge, Sport Compact | Results | | Nathan Schmitter (Street Stocks) | 5th | - | - | 15th |
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| 9/4/2021 | Crystal Motor Speedway - Crystal, MI 410 Sprints - Non-Winged: Great Lakes Traditional Sprints Lightning Sprints: Great Lakes Lightning Sprints Hobby Stocks, A Modifieds, Street Stocks, Junior 1 Lites Dirt Karts, Dirt Pro Trucks, Mini Wedge, Sport Compact | Results | | Nathan Schmitter (Street Stocks) | 3rd | - | - | 19th |
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| 9/5/2021 | Crystal Motor Speedway - Crystal, MI Outlaw Late Models & Open Modifieds Dirt Super Late Models, Hobby Stocks, B Modifieds, Street Stocks, Dirt Late Models, 410 Sprints - Non-Winged, Lightning Sprints, Dirt Pro Trucks, Sport Compact | Results | | Nathan Schmitter (Street Stocks) | 5th | - | 3rd | - |
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