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| 4/17/2021 | 141 Speedway - Maribel, WI 141 Championship Cup Opener Stock Cars, Sportsmans, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | Gregory Gretz (IMCA Modified) | 2nd | - | - | 6th |
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| 5/1/2021 | 141 Speedway - Maribel, WI Salute to Armed Forces / 141 Championship Cup Race #3 Stock Cars, Sportsmans, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | Gregory Gretz (IMCA Modified) | 5th | - | 2nd | 18th |
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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 | | Gregory Gretz (IMCA Modified) | 5th | - | 3rd | 12th |
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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 | | Gregory Gretz (IMCA Modified) | 6th | - | 1st | 3rd |
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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 | | Gregory Gretz (IMCA Modified) | 5th | - | 1st | 11th |
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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 | | Gregory Gretz (IMCA Modified) | 4th | - | - | 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 | | Gregory Gretz (A Modifieds) | 1st | - | - | 2nd |
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| 6/5/2021 | 141 Speedway - Maribel, WI Bank First Coin Drop / 141 Championship Cup Race #8 Stock Cars, Sportsmans, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | Gregory Gretz (IMCA Modified) | 7th | - | 5th | - |
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| 6/6/2021 | Luxy Raceway - Luxemburg, WI Y100 This IS Country Night Street Stocks, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | Gregory Gretz (IMCA Modified) | 2nd | - | - | 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 | | Gregory Gretz (IMCA Modified) | 4th | - | - | 14th |
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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 | | Gregory Gretz (IMCA Modified) | 3rd | - | - | 17th |
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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 | | Gregory Gretz (IMCA Modified) | 1st | - | - | 22nd |
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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 | | Gregory Gretz (IMCA Modified) | 7th | - | 2nd | 11th |
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| 7/17/2021 | 141 Speedway - Maribel, WI Pepsi Fan Appreciation Free Corn Feed / 141 Championship Cup Race #12 Stock Cars, Sportsmans, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | Gregory Gretz (IMCA Modified) | 2nd | - | - | 13th |
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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 | | Gregory Gretz (IMCA Modified) | 6th | - | 5th | - |
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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 | | Gregory Gretz (IMCA Modified) | 6th | - | - | 14th | | Gregory Gretz (IMCA Stock Car) | 7th | - | - | 42nd |
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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 | | Gregory Gretz (IMCA Stock Car) | 4th | - | 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 | | Gregory Gretz (A Modifieds) | 1st | - | - | 2nd |
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| 7/25/2021 | Luxy Raceway - Luxemburg, WI Hall Of Fame Night Street Stocks, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | Gregory Gretz (IMCA Modified) | 4th | - | - | 4th |
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| 7/31/2021 | 141 Speedway - Maribel, WI FZE Manufacturing Solutions Presents Powder Puff Races / 141 Championship Cup Race #13 Stock Cars, Sportsmans, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Rain Out |
| 8/1/2021 | Luxy Raceway - Luxemburg, WI Village Kitchen Presents Mod Mania! Street Stocks, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | Gregory Gretz (IMCA Modified) | 3rd | - | - | 6th |
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| 8/3/2021 | Outagamie Speedway - Seymour, WI FVP Platinum Batteries Showdown featuring the Morton Buildings World of Outlaws Late Models Dirt Super Late Models: World of Outlaws - Late Models IMCA Modified, IMCA Stock Car | Results | | Gregory Gretz (IMCA Modified) | 4th | - | - | 4th |
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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 | | Gregory Gretz (IMCA Modified) | 3rd | - | - | 21st |
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| 8/15/2021 | Luxy Raceway - Luxemburg, WI Gandrud Auto Group Presents: Back to School Night featuring Backpack Giveaway Street Stocks, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | Gregory Gretz (IMCA Modified) | 9th | - | - | 15th (DNF) |
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| 8/21/2021 | The Hill Raceway - Sturgeon Bay, WI Championship Night Stock Cars, A Modifieds, B Modifieds, Street Stocks, Dirt 4 cyl Modifieds | Results | | Gregory Gretz (A Modifieds) | 5th | - | - | 3rd |
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| 9/8/2021 | Boone Speedway - Boone, IA 2021 IMCA Speedway Motors Super Nationals Fueled by Casey’s IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Gregory Gretz (IMCA Modified) | 8th (DNF) | - | - | - |
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| 9/9/2021 | Boone Speedway - Boone, IA 2021 IMCA Speedway Motors Super Nationals Fueled by Casey’s Sportsmans, Midwest Modifieds, Vintage Full Body Stock Cars, IMCA Modified, IMCA Stock Car | Results | | Gregory Gretz (Midwest Modifieds) | 3rd | - | - | - | | Gregory Gretz (IMCA Modified) | 4th | - | 1st | - |
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| 9/10/2021 | Boone Speedway - Boone, IA 2021 IMCA Speedway Motors Super Nationals Fueled by Casey’s Generic 2, IMCA Modified, IMCA Stock Car | Results | | Gregory Gretz (IMCA Modified) | 2nd | - | - | 29th (DNF) |
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| 9/11/2021 | Boone Speedway - Boone, IA 2021 IMCA Speedway Motors Super Nationals Fueled by Casey’s Midwest Modifieds, Vintage Full Body Stock Cars, Vintage Modifieds, Generic 1, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Gregory Gretz (IMCA Modified) | 6th | - | - | - |
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