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| 4/24/2021 | Shelby County Speedway - Harlan, IA Spring Fling Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Sport Compact, IMCA Mod Lite | Results | | Mike Stapleton (Stock Cars) | 2nd | - | - | 9th |
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| 4/30/2021 | Crawford County Speedway - Denison, IA Regular Night All Classes-$1000 to win Sprint Cars 305 Sprints - Winged, Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets, Sport Compact | Results | | Mike Stapleton (Stock Cars) | 2nd | - | - | 4th |
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| 5/1/2021 | Shelby County Speedway - Harlan, IA May Day Mayhem Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Sport Compact | Results | | Mike Stapleton (Stock Cars) | 2nd | - | - | 3rd |
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| 5/7/2021 | Crawford County Speedway - Denison, IA Regular Night All Classes-$1000 to win Modified 305 Sprints - Winged, Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets, Sport Compact | Results | | Mike Stapleton (Stock Cars) | 4th | - | - | 8th |
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| 5/15/2021 | Shelby County Speedway - Harlan, IA Pizza Ranch presents The James Buwalda Memorial w/ Kids Candy Dash Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Vintage Full Body Stock Cars, Sport Compact | Results | | Mike Stapleton (Hobby Stocks) | - | - | - | - | | Mike Stapleton (Stock Cars) | 2nd | - | - | 7th |
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| 5/21/2021 | Crawford County Speedway - Denison, IA Regular Night All Classes-$1000 to win Sport Mods and Stocks Cars with draw/redraw for these classes 305 Sprints - Winged, Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets, Sport Compact | Results | | Mike Stapleton (Stock Cars) | 2nd | - | - | 7th |
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| 5/22/2021 | Shelby County Speedway - Harlan, IA Coca-Cola night Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Sport Compact | Results | | Mike Stapleton (Stock Cars) | 2nd | - | - | 4th |
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| 5/28/2021 | Crawford County Speedway - Denison, IA Regular Night All Classes-$600 to win Hobby Stock and $400 to win Sport Compact 305 Sprints - Winged, Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets, Sport Compact | Results | | Mike Stapleton (Stock Cars) | 4th | - | - | 6th |
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| 5/29/2021 | Shelby County Speedway - Harlan, IA Eagles Landing presents Military and First Responders Night Hobby Stocks, Stock Cars, B Modifieds, Dirt Late Models, Sport Compact | Results | | Mike Stapleton (Stock Cars) | 1st | - | - | 3rd |
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| 6/4/2021 | Crawford County Speedway - Denison, IA Regular Night All Classes-$1000 to win Modifieds 305 Sprints - Winged, Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets, Sport Compact | Results | | Mike Stapleton (Stock Cars) | 3rd | - | - | 3rd |
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| 6/5/2021 | Shelby County Speedway - Harlan, IA Race for Cancer Awareness Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Sport Compact | Results | | Mike Stapleton (Stock Cars) | 3rd | - | - | 7th |
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| 6/9/2021 | Buena Vista Raceway - Alta, IA Hobby Stocks, Stock Cars, B Modifieds, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Mike Stapleton (IMCA Stock Car) | 4th | - | - | 10th | | Mike Stapleton (IMCA Hobby Stock) | - | - | - | - |
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| 6/11/2021 | Crawford County Speedway - Denison, IA Regular Night All Classes-$1000 to win Modified and Sprint Cars. Sponsored by Finishline 305 Sprints - Winged, Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets, Sport Compact | Results | | Mike Stapleton (Stock Cars) | 6th | - | - | 10th |
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| 6/12/2021 | Shelby County Speedway - Harlan, IA Shelby County Speedway - WEST Dirt Super Late Models: SLMR Late Model Series Hobby Stocks, Stock Cars, B Modifieds, Non-Winged Sprints | Results | | Mike Stapleton (Stock Cars) | 4th | - | - | 11th (DNF) |
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| 6/18/2021 | Crawford County Speedway - Denison, IA Regular Night All Classes-$1000 to win Stock Cars 305 Sprints - Winged, Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets, Sport Compact | Results | | Mike Stapleton (Stock Cars) | 5th | - | - | 6th |
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| 6/19/2021 | Shelby County Speedway - Harlan, IA The BuckSnort presents Father's Day Fleet Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Vintage Full Body Stock Cars, Sport Compact | Results | | Mike Stapleton (Stock Cars) | 4th | - | - | 4th |
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| 6/25/2021 | Crawford County Speedway - Denison, IA $1,500 to win at Crawford County Speedway 305 Sprints - Winged, Dirt Super Late Models, Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets | Results | | Mike Stapleton (Stock Cars) | 2nd | - | - | 5th |
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| 6/29/2021 | Clay County Fair Speedway - Spencer, IA Midwest Madness Tour IMCA Modified: Midwest Madness Tour IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Mike Stapleton (IMCA Stock Car) | 3rd | - | - | 10th |
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| 6/30/2021 | Buena Vista Raceway - Alta, IA Midwest Madness Tour/Kyle Suter Memorial Race IMCA Modified: Midwest Madness Tour Hobby Stocks, Stock Cars, B Modifieds, Sport Compact, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Mike Stapleton (IMCA Stock Car) | 7th | - | - | 12th |
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| 7/2/2021 | Crawford County Speedway - Denison, IA Regular Night All Classes-$600 to win Hobby Stock and $400 to win Sport Compact 305 Sprints - Winged, Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets | Results | | Mike Stapleton (Stock Cars) | 2nd | - | - | 3rd |
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| 7/9/2021 | Crawford County Speedway - Denison, IA Regular Night All Classes-$1000 to win Stock Cars 305 Sprints - Winged, Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets | Results | | Mike Stapleton (Stock Cars) | 2nd | - | - | 6th |
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| 7/13/2021 | Shelby County Speedway - Harlan, IA Dale Swanson Memorial Hobby Stocks, Stock Cars, A Modifieds, B Modifieds | Results | | Mike Stapleton (Stock Cars) | 5th | - | - | 17th |
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| 7/16/2021 | Crawford County Speedway - Denison, IA Regular Night All Classes-$1000 to win Sport Mods 305 Sprints - Winged, Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets | Results | | Mike Stapleton (Stock Cars) | 3rd | - | - | 3rd |
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| 7/17/2021 | Shelby County Speedway - Harlan, IA Shelby County Fair Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Vintage Full Body Stock Cars, Sport Compact | Results | | Mike Stapleton (Stock Cars) | 5th | - | - | 4th |
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| 7/23/2021 | Crawford County Speedway - Denison, IA Regular Night All Classes-Fair Night 305 Sprints - Winged, Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets | Results | | Mike Stapleton (Stock Cars) | 1st | - | - | 4th |
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| 7/30/2021 | Crawford County Speedway - Denison, IA Regular Night All Classes-$1000 to win Modified 305 Sprints - Winged, Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets | Rain Out |
| 8/6/2021 | Crawford County Speedway - Denison, IA Regular Night All Classes-$1000 to win Sprint Cars 305 Sprints - Winged, Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets | Results | | Mike Stapleton (Stock Cars) | 6th | - | - | 11th (DNF) |
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| 8/13/2021 | Crawford County Speedway - Denison, IA Regular Night All Classes-$600 to win Hobby Stock and $400 to win Sport Compact 305 Sprints - Winged, Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets | Results | | Mike Stapleton (Stock Cars) | 3rd | - | - | 8th |
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| 8/14/2021 | Shelby County Speedway - Harlan, IA FinishLine / Let's Get Back to School w/ Kids Bike Races Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Vintage Full Body Stock Cars, Sport Compact | Results | | Mike Stapleton (Stock Cars) | 2nd | - | - | 3rd |
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| 8/21/2021 | Shelby County Speedway - Harlan, IA IMCA Sunoco Late Model & Season Smack Down Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Sport Compact | Results | | Mike Stapleton (Stock Cars) | 3rd | - | - | 6th |
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| 9/4/2021 | Boone Speedway - Boone, IA Wild Rose Casino Prelude to the Super Nationals IMCA Modified, IMCA Stock Car, Pro Dwarf, IMCA Mod Lite | Results | | Mike Stapleton (IMCA Stock Car) | 1st | - | - | 8th |
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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 | | Mike Stapleton (IMCA Stock Car) | 2nd | - | - | - |
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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 | | Mike Stapleton (IMCA Stock Car) | 3rd | - | - | - |
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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 | | Mike Stapleton (IMCA Stock Car) | 4th | - | 7th | - |
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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 | | Mike Stapleton (IMCA Stock Car) | - | - | - | 22nd (DNF) |
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| 9/24/2021 | Shelby County Speedway - Harlan, IA Tiny Lund Night 1 / Battle of the Compacts on Hwy 59 Hobby Stocks, Stock Cars, B Modifieds, Dirt Late Models, Sport Compact | Results | | Mike Stapleton (Stock Cars) | 5th | - | 2nd | 18th (DNF) |
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| 9/25/2021 | Shelby County Speedway - Harlan, IA Tiny Lund Night 2 / Dirt Truck Racing Assoc. Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Dirt Pro Trucks, Sport Compact | Results | | Mike Stapleton (Stock Cars) | 7th | - | 7th | 16th (DNF) |
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