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| 4/17/2021 | Thunderbird Raceway - Muskegon, MI Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | John Clark (A Modifieds) | 9th | - | 9th | - |
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| 5/1/2021 | Thunderbird Raceway - Muskegon, MI Full Show Plus $400 to win Cyber Stocks Presented by RC Machine Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | John Clark (A Modifieds) | 6th | - | - | 17th |
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| 5/8/2021 | Thunderbird Raceway - Muskegon, MI Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | John Clark (A Modifieds) | 8th | - | 9th | - |
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| 5/22/2021 | Thunderbird Raceway - Muskegon, MI Allstar Performance Street Stock Challenge $750 to win & Full Show Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | John Clark (A Modifieds) | - | - | - | - | | John Clark (Pro Late Model) | 4th | - | - | 5th |
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| 5/29/2021 | Thunderbird Raceway - Muskegon, MI Salute to Veterans $1000 to win IMCA Modfieds & Full Show Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | John Clark (A Modifieds) | 7th | - | 10th (DNF) | - | | John Clark (Pro Late Model) | 5th | - | - | 10th |
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| 6/5/2021 | Thunderbird Raceway - Muskegon, MI Midwest Dirt $500 to Win & Full Show Sport Compact: Midwest Compact Touring Series Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws | Results | | John Clark (A Modifieds) | DNS | - | - | DNS |
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| 6/12/2021 | Thunderbird Raceway - Muskegon, MI IMCA Modified Summer Series $1000 to win Presented by JJ Motorsports plus full show Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | John Clark (A Modifieds) | 5th | - | 8th | - |
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| 6/23/2021 | Thunderbird Raceway - Muskegon, MI Eastern IMCA Allstars IMCA Modified: Eastern IMCA Allstars A Modifieds, Sport Compact, IMCA Stock Car, DIRTcar Pro Stock | Results | | John Clark (A Modifieds) | 7th | - | 7th | - |
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| 7/3/2021 | Thunderbird Raceway - Muskegon, MI Lightning Sprints: Great Lakes Lightning Sprints Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | John Clark (A Modifieds) | 5th | - | - | 21st |
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| 7/9/2021 | Winston Speedway - Rothbury, MI Full Show Asphalt Mini Stocks, Stock Cars, Sportsmans, Street Stocks, Dirt Late Models, Hornets, Mini Wedge, IMCA Modified | Results | | John Clark (IMCA Modified) | 4th | - | - | 8th |
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| 7/10/2021 | Thunderbird Raceway - Muskegon, MI $500 to win Warriors Presented by NIX's Trucking-$1000 to Win IMCA Modified Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | John Clark (A Modifieds) | 4th | - | - | 20th |
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| 7/16/2021 | Winston Speedway - Rothbury, MI Full Show Asphalt Mini Stocks, Stock Cars, Sportsmans, Street Stocks, Dirt Late Models, Hornets, Mini Wedge, IMCA Modified | Results | | John Clark (IMCA Modified) | 7th (DNF) | - | - | 13th (DNF) |
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| 7/23/2021 | Winston Speedway - Rothbury, MI IMCA Fast Shaft $1000 to win and Full Show Asphalt Mini Stocks, Stock Cars, Sportsmans, Street Stocks, Dirt Late Models, Hornets, Mini Wedge, IMCA Modified | Results | | John Clark (IMCA Modified) | 5th | - | - | 17th (DNF) |
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| 7/24/2021 | Thunderbird Raceway - Muskegon, MI Street Stock Mid Summer Shootout, $500 to win Cyber Stocks, Michigan Automotive Fan Club Night Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | John Clark (A Modifieds) | 11th | - | - | 15th |
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| 7/31/2021 | Thunderbird Raceway - Muskegon, MI Junkyard 100 Enduro JJ Motorsports IMCA Mod Summer Series Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Enduro, Pro Late Model, Mini Wedge, Mini Outlaws | Results | | John Clark (A Modifieds) | 4th | - | - | 17th |
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| 8/7/2021 | Thunderbird Raceway - Muskegon, MI Kids Night- Super Late Model $2000 to win Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Sport Compact | Results | | John Clark (A Modifieds) | 4th | - | - | 10th |
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| 8/14/2021 | Thunderbird Raceway - Muskegon, MI 360 Sprints - Winged: GLSS-Great Lakes Super Sprints Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | John Clark (A Modifieds) | 4th | - | - | 13th |
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| 8/21/2021 | Thunderbird Raceway - Muskegon, MI IMCA Modified Summer Series $1000 to win-Warriors $300 to win Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | John Clark (A Modifieds) | 5th | - | - | 15th |
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| 8/27/2021 | Winston Speedway - Rothbury, MI ALMS Late models plus show Asphalt Mini Stocks, Stock Cars, Sportsmans, Street Stocks, Dirt Late Models, 410 Sprints - Non-Winged, Hornets, Lightning Sprints, Mini Wedge, IMCA Modified | Results | | John Clark (IMCA Modified) | 4th | - | - | 6th |
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| 8/28/2021 | Thunderbird Raceway - Muskegon, MI Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | John Clark (A Modifieds) | 4th | - | - | 11th |
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| 9/4/2021 | Thunderbird Raceway - Muskegon, MI Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | John Clark (A Modifieds) | - | - | - | - |
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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 | | John Clark (B Modifieds) | 5th | - | - | 3rd |
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| 9/10/2021 | Thunderbird Raceway - Muskegon, MI Rolling Thunder Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Enduro, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | John Clark (A Modifieds) | 4th | - | - | 13th |
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