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| 4/17/2021 | Shawano Speedway - Shawano, WI Dirt Kings Late Model Series Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Dirt 4 cyl Modifieds | Results | | Josh Mroczkowski (Stock Cars) | 5th | - | - | 7th |
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| 4/24/2021 | Shawano Speedway - Shawano, WI Regular Points Night-Dirt Kings Weather Date Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Dirt 4 cyl Modifieds | Results | | Josh Mroczkowski (Stock Cars) | 2nd | - | - | 8th |
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| 5/1/2021 | Shawano Speedway - Shawano, WI Regular Points Night Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Dirt 4 cyl Modifieds | Results | | Josh Mroczkowski (Stock Cars) | 1st | - | - | 9th |
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| 5/7/2021 | Outagamie Speedway - Seymour, WI 2021 Season Opener by Klink Equipment Street Stocks, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Sport Compact | Results | | Josh Mroczkowski (IMCA Stock Car) | 10th | - | 6th | - |
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| 5/8/2021 | Shawano Speedway - Shawano, WI Regular Points Night - Spectator Eliminators Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Dirt 4 cyl Modifieds | Results | | Josh Mroczkowski (Stock Cars) | 2nd | - | - | 3rd |
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| 5/14/2021 | Outagamie Speedway - Seymour, WI Street Stocks, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Sport Compact | Results | | Josh Mroczkowski (IMCA Stock Car) | 3rd | - | - | 7th |
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| 5/15/2021 | Shawano Speedway - Shawano, WI Regular Points Night Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Dirt 4 cyl Modifieds | Rain Out |
| 5/16/2021 | Luxy Raceway - Luxemburg, WI Season Opener - 2021 COVID Crusher Part Two Street Stocks, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | Josh Mroczkowski (IMCA Stock Car) | 8th | - | 2nd | 18th |
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| 5/21/2021 | Outagamie Speedway - Seymour, WI Night #3 Street Stocks, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Sport Compact | Rain Out |
| 5/22/2021 | Shawano Speedway - Shawano, WI Line-X Extreme Coatings on Clintonville Modified Special $1000 to Win Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Dirt 4 cyl Modifieds | Results | | Josh Mroczkowski (Stock Cars) | 4th | - | - | 9th |
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| 5/29/2021 | Shawano Speedway - Shawano, WI Regular Points Night - Spectator Eliminators Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Dirt 4 cyl Modifieds | Results | | Josh Mroczkowski (Stock Cars) | 1st | - | - | 3rd |
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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 | | Josh Mroczkowski (Stock Cars) | 7th (DNF) | - | 2nd | 5th |
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| 6/4/2021 | Outagamie Speedway - Seymour, WI Old Glory Honor Flight Night at the Races/Police, Fire & EMS Night at the Races Street Stocks, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Sport Compact | Results | | Josh Mroczkowski (IMCA Stock Car) | 9th (DNF) | - | 2nd | 21st (DNF) |
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| 6/5/2021 | Shawano Speedway - Shawano, WI Ladies Night - first 200 women get in Free Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Dirt 4 cyl Modifieds | Results | | Josh Mroczkowski (Stock Cars) | 3rd | - | - | 6th |
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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 | | Josh Mroczkowski (IMCA Stock Car) | 1st | - | - | 1st |
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| 6/12/2021 | Shawano Speedway - Shawano, WI Tribute to the Go Karters Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Dirt 4 cyl Modifieds | Results | | Josh Mroczkowski (Stock Cars) | 5th | - | - | 9th |
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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 | | Josh Mroczkowski (IMCA Stock Car) | 9th | - | 5th | - |
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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 | | Josh Mroczkowski (IMCA Stock Car) | 4th | - | - | 14th |
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| 6/18/2021 | Outagamie Speedway - Seymour, WI MSA Sprints join the program 360 Sprints - Winged: Midwest Sprint Car Association Street Stocks, IMCA Modified, IMCA Stock Car, IMCA Sport Compact | Results | | Josh Mroczkowski (IMCA Stock Car) | 8th | - | 5th | 15th |
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| 6/19/2021 | Shawano Speedway - Shawano, WI Hall of Fame Night - Ed Bertram/George Giesen Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Dirt 4 cyl Modifieds | Results | | Josh Mroczkowski (Stock Cars) | 4th | - | - | 11th |
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| 7/2/2021 | Outagamie Speedway - Seymour, WI SPEED & FIREWORKS on Independence Day Weekend at Outagamie Speedway Street Stocks, IMCA Northern SportMod, IMCA Stock Car, IMCA Sport Compact | Results | | Josh Mroczkowski (IMCA Stock Car) | 4th | - | - | 12th |
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| 7/3/2021 | Shawano Speedway - Shawano, WI Tribute to the Veterans Stock Cars, A Modifieds, B Modifieds, Dirt 4 cyl Modifieds | Results | | Josh Mroczkowski (Stock Cars) | 4th | - | - | 6th |
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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 | | Josh Mroczkowski (IMCA Stock Car) | 9th | - | 4th | 16th |
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| 7/16/2021 | Outagamie Speedway - Seymour, WI 5 Divisions Street Stocks, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Sport Compact | Results | | Josh Mroczkowski (IMCA Stock Car) | 1st | - | - | 4th |
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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 | | Josh Mroczkowski (IMCA Stock Car) | 3rd | - | - | 5th |
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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 | | Josh Mroczkowski (IMCA Stock Car) | 3rd | - | 6th | - |
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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 | | Josh Mroczkowski (IMCA Stock Car) | 1st | - | - | 21st |
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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 | | Josh Mroczkowski (IMCA Stock Car) | 6th | - | - | - |
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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 | | Josh Mroczkowski (IMCA Stock Car) | 8th (DNF) | - | 2nd | 10th |
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| 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 | | Josh Mroczkowski (IMCA Stock Car) | 2nd | - | - | 5th |
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| 8/13/2021 | Outagamie Speedway - Seymour, WI Four to go.... Street Stocks, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Sport Compact | Results | | Josh Mroczkowski (IMCA Stock Car) | 5th | - | - | 7th |
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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 | | Josh Mroczkowski (IMCA Stock Car) | 4th | - | - | 11th |
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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 | | Josh Mroczkowski (IMCA Stock Car) | 7th (DNF) | - | 2nd | 8th |
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| 8/19/2021 | 141 Speedway - Maribel, WI Captain of the Creek III $10,000.00 to Win IMCA Northern SportMods Stock Cars, IMCA Northern SportMod, IMCA Stock Car | Results | | Josh Mroczkowski (IMCA Stock Car) | 2nd | - | - | 21st |
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| 8/20/2021 | Outagamie Speedway - Seymour, WI Two down, Three to go Street Stocks, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Sport Compact | Results | | Josh Mroczkowski (IMCA Stock Car) | 4th | - | - | 4th |
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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 | | Josh Mroczkowski (Stock Cars) | 2nd | - | - | 5th |
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| 8/22/2021 | Luxy Raceway - Luxemburg, WI Robinson Inc Night at the Races Street Stocks, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | Josh Mroczkowski (IMCA Stock Car) | 4th | - | - | 11th |
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| 8/29/2021 | Luxy Raceway - Luxemburg, WI Championship Night Street Stocks, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | Josh Mroczkowski (IMCA Stock Car) | 6th | - | 2nd | 7th |
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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 | | Josh Mroczkowski (Stock Cars) | 5th | - | - | 13th (DNF) |
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| 9/18/2021 | Outagamie Speedway - Seymour, WI 2021 FALL BRAWL presented by KLINK EQUIPMENT Street Stocks, Dirt Late Models, Baby Grand, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Sport Compact | Results | | Josh Mroczkowski (IMCA Stock Car) | 5th | - | 2nd | 21st (DNF) |
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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 | | Josh Mroczkowski (IMCA Stock Car) | 2nd | - | - | 5th |
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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 | | Josh Mroczkowski (IMCA Stock Car) | 6th | - | 5th | - |
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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 | | Josh Mroczkowski (IMCA Stock Car) | 4th | - | 1st | 11th |
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| 10/8/2021 | Sk Speedway - Unity, WI SK Clash Stock Cars, A Modifieds, B Modifieds, Street Stocks, Hornets, Dirt 4 cyl Modifieds, Super Stocks, Pure Stock | Results | | Josh Mroczkowski (Stock Cars) | 3rd | - | - | 4th |
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| 10/9/2021 | Sk Speedway - Unity, WI SK Clash Night 2 Stock Cars, A Modifieds, B Modifieds, Street Stocks, Hornets, Dirt 4 cyl Modifieds, Super Stocks, Pure Stock | Results | | Josh Mroczkowski (Stock Cars) | 1st | - | - | 7th (DNF) |
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