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| 5/8/2021 | 141 Speedway - Maribel, WI Mother's Day / "Red" Race $1,000.00 to Win Red IMCA Modified / 141 Championship Cup Race #4 Stock Cars, Sportsmans, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | John Adams (IMCA Stock Car) | 8th | - | 8th | - |
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| 5/15/2021 | 141 Speedway - Maribel, WI 141 Championship Cup Race #5 Stock Cars, Sportsmans, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | John Adams (IMCA Stock Car) | 8th | - | 3rd | 13th |
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| 5/22/2021 | 141 Speedway - Maribel, WI 141 Championship Cup Race #6 Stock Cars, Sportsmans, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | John Adams (IMCA Stock Car) | 8th | - | 6th | - |
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| 5/29/2021 | 141 Speedway - Maribel, WI Nathan Bouche Memorial / $1,000.00 to Win Stock Cars Triple Creek Series / 141 Championship Cup #7 Stock Cars, Sportsmans, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | John Adams (IMCA Stock Car) | 7th | - | 5th | - |
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| 5/30/2021 | The Hill Raceway - Sturgeon Bay, WI Nathan Bouche Memorial Stock Cars, A Modifieds, B Modifieds, Street Stocks, Dirt 4 cyl Modifieds | Results | | John Adams (Stock Cars) | 7th | - | 6th | - |
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| 6/12/2021 | 141 Speedway - Maribel, WI Prestige Custom Cabinetry "White" Race $1,000.00 to Win IMCA Modifieds / 141 Championship Cup #9 Stock Cars, Sportsmans, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | John Adams (IMCA Stock Car) | 5th | - | 2nd | 10th |
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| 6/16/2021 | 141 Speedway - Maribel, WI Clash at the Creek XIII $10,000.00 to Win IMCA Modifieds IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | John Adams (IMCA Stock Car) | 2nd | - | - | 7th |
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| 6/17/2021 | 141 Speedway - Maribel, WI Clash at The Creek XIII $10,000.00 to Win IMCA Modifieds IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | John Adams (IMCA Stock Car) | 7th | - | 6th | - |
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| 6/19/2021 | The Hill Raceway - Sturgeon Bay, WI Hall Of Fame Night Stock Cars, B Modifieds, Street Stocks, Dirt 4 cyl Modifieds | Results | | John Adams (Stock Cars) | 3rd | - | - | 2nd |
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| 7/10/2021 | 141 Speedway - Maribel, WI Christmas in July St Jude's Fundraiser / Triple Creek Stock Cars $1,000.00 to Win / 141 CC #11 Stock Cars, Sportsmans, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | John Adams (IMCA Stock Car) | 1st | - | - | 20th |
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| 7/18/2021 | Luxy Raceway - Luxemburg, WI Eric Van Iten Memorial Night Street Stocks, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | John Adams (IMCA Stock Car) | 5th | - | 8th | - |
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| 7/21/2021 | 141 Speedway - Maribel, WI King of the Creek IV $10,000.00 to Win IMCA Stock Cars - Qualifying Sport Compact, IMCA Modified, IMCA Stock Car | Results | | John Adams (IMCA Stock Car) | 5th | - | - | 14th |
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| 7/22/2021 | 141 Speedway - Maribel, WI King of the Creek IV $10,000.00 to Win IMCA Stock Cars Stock Cars, IMCA Northern SportMod, IMCA Stock Car | Results | | John Adams (IMCA Stock Car) | 6th | - | - | - |
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| 7/24/2021 | The Hill Raceway - Sturgeon Bay, WI Street Stock Busch Shootout Stock Cars, A Modifieds, B Modifieds, Street Stocks, Dirt 4 cyl Modifieds | Results | | John Adams (Stock Cars) | 1st | - | - | 9th |
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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 | | John Adams (IMCA Stock Car) | 6th | - | 3rd | 21st |
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| 9/4/2021 | The Hill Raceway - Sturgeon Bay, WI The Hill Special Stock Cars, B Modifieds, Street Stocks, Dirt 4 cyl Modifieds | Results | | John Adams (Stock Cars) | 9th (DNF) | - | 7th | - |
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| 9/17/2021 | Marshalltown Speedway - Marshalltown, IA 15th Annual World Nationals IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | John Adams (IMCA Stock Car) | 7th | - | - | 21st (DNF) |
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| 9/18/2021 | Marshalltown Speedway - Marshalltown, IA 15th Annual World Nationals IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | John Adams (IMCA Stock Car) | 3rd | - | - | 13th |
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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 | | John Adams (IMCA Stock Car) | 7th | - | 4th | - |
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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 | | John Adams (IMCA Stock Car) | 8th | - | 11th | - |
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| 10/2/2021 | Luxy Raceway - Luxemburg, WI The Return of the Fall Classic in the 'Burg Street Stocks, Baby Grand, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | John Adams (IMCA Stock Car) | 3rd | - | - | 16th |
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