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| 4/16/2021 | I-96 Speedway - Lake Odessa, MI Great Lakes Super Sprints - Ice Breaker 360 Sprints - Winged: GLSS-Great Lakes Super Sprints B Modifieds, Street Stocks, Mini Wedge, Mini Outlaws, Sport Compact | Results | | Ken Zeigler (B Modifieds) | 9th | - | - | 16th |
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| 4/30/2021 | I-96 Speedway - Lake Odessa, MI Non Wing Challenge Night 2 DIRTcar Late Models, B Modifieds, Street Stocks, 410 Sprints - Non-Winged, Mini Wedge, Mini Outlaws, Sport Compact | Results | | Ken Zeigler (B Modifieds) | 6th | - | - | 17th (DNF) |
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| 5/12/2021 | Crystal Motor Speedway - Crystal, MI Eastern IMCA Allstars - IMCA Modifieds, IMCA Stock Cars, and Cyber Stock Hobby Stocks, A Modifieds, Sport Compact, IMCA Stock Car | Results | | Ken Zeigler (A Modifieds) | 6th | - | 5th | 19th (DNF) |
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| 5/15/2021 | Crystal Motor Speedway - Crystal, MI Relay for Life Fundraiser and Veterans Day - Free admission with ID Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Junior 1 Lites Dirt Karts, Dirt Pro Trucks, Mini Wedge, Sport Compact | Results | | Ken Zeigler (A Modifieds) | 3rd | - | - | 14th |
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| 5/22/2021 | Crystal Motor Speedway - Crystal, MI Full Show Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Junior 1 Lites Dirt Karts, Dirt Pro Trucks, Mini Wedge, Sport Compact | Results | | Ken Zeigler (A Modifieds) | 5th | - | - | 7th |
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| 5/29/2021 | Crystal Motor Speedway - Crystal, MI 360 Sprints - Winged: GLSS-Great Lakes Super Sprints Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Dirt Pro Trucks, Mini Outlaws, Sport Compact | Results | | Ken Zeigler (A Modifieds) | 1st | - | - | 8th |
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| 5/30/2021 | Crystal Motor Speedway - Crystal, MI 410 Sprints - Non-Winged: Great Lakes Traditional Sprints Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Dirt Pro Trucks, Sport Compact | Results | | Ken Zeigler (A Modifieds) | 3rd | - | - | 18th |
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| 6/5/2021 | Crystal Motor Speedway - Crystal, MI IMCA Challenge - $1252 to Win Sponsored by Lane Automotive-Allstar Performance Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Junior 1 Lites Dirt Karts, Dirt Pro Trucks, Mini Wedge, Sport Compact | Results | | Ken Zeigler (A Modifieds) | 4th | - | - | 13th |
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| 6/12/2021 | Crystal Motor Speedway - Crystal, MI Lightning Sprints: Great Lakes Lightning Sprints Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Dirt Pro Trucks, Sport Compact | Results | | Ken Zeigler (A Modifieds) | - | - | - | - |
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| 6/19/2021 | Crystal Motor Speedway - Crystal, MI Full Show - Sponsored by Carson City Lumber Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Dirt Pro Trucks, Sport Compact | Results | | Ken Zeigler (A Modifieds) | 8th | - | 6th | - |
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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 | | Ken Zeigler (A Modifieds) | 8th | - | 6th | - |
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| 7/3/2021 | Crystal Motor Speedway - Crystal, MI 360 Sprints - Winged: GLSS-Great Lakes Super Sprints Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Junior 1 Lites Dirt Karts, Mini Wedge, Sport Compact | Results | | Ken Zeigler (A Modifieds) | 4th | - | - | 8th |
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| 7/10/2021 | Crystal Motor Speedway - Crystal, MI S.O.D. Sprints - NO PRO STOCKS Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Dirt Pro Trucks, Sport Compact | Results | | Ken Zeigler (A Modifieds) | 3rd | - | - | 6th |
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| 7/17/2021 | Crystal Motor Speedway - Crystal, MI YES 2 KIDS - Autographs from 6:00-7:00 p.m. Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Junior 1 Lites Dirt Karts, Dirt Pro Trucks, Mini Wedge, Sport Compact | Results | | Ken Zeigler (A Modifieds) | 7th | - | - | 14th |
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| 7/24/2021 | Crystal Motor Speedway - Crystal, MI Full Show plus Steeple Race - Sponsored by ALMA BOLT Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Junior 1 Lites Dirt Karts, Dirt Pro Trucks, Mini Wedge, Sport Compact | Results | | Ken Zeigler (A Modifieds) | - | - | - | - |
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| 7/31/2021 | Crystal Motor Speedway - Crystal, MI Lightning Sprints: Great Lakes Lightning Sprints Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Junior 1 Lites Dirt Karts, Dirt Pro Trucks, Mini Wedge, Sport Compact | Results | | Ken Zeigler (A Modifieds) | 7th | - | - | 10th |
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| 8/7/2021 | Crystal Motor Speedway - Crystal, MI Full Show - Sponsored by H & H EXCAVATING Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Junior 1 Lites Dirt Karts, Dirt Pro Trucks, Mini Wedge, Sport Compact | Results | | Ken Zeigler (A Modifieds) | 8th | - | - | 8th |
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| 8/14/2021 | Crystal Motor Speedway - Crystal, MI G.L.O.W. Vintage Modifieds - Sponsored by Engine Pro Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Junior 1 Lites Dirt Karts, Dirt Pro Trucks, Mini Wedge, Sport Compact | Results | | Ken Zeigler (A Modifieds) | 10th | - | - | 11th |
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| 8/21/2021 | Crystal Motor Speedway - Crystal, MI Full Show Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Junior 1 Lites Dirt Karts, Dirt Pro Trucks, Mini Wedge, Sport Compact | Results | | Ken Zeigler (A Modifieds) | 7th | - | - | 9th |
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| 9/4/2021 | Crystal Motor Speedway - Crystal, MI 410 Sprints - Non-Winged: Great Lakes Traditional Sprints Lightning Sprints: Great Lakes Lightning Sprints Hobby Stocks, A Modifieds, Street Stocks, Junior 1 Lites Dirt Karts, Dirt Pro Trucks, Mini Wedge, Sport Compact | Results | | Ken Zeigler (A Modifieds) | 9th | - | - | 14th |
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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 | | Ken Zeigler (IMCA Modified) | 8th | - | - | - |
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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 | | Ken Zeigler (IMCA Modified) | 7th | - | 12th | - |
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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 | | Ken Zeigler (IMCA Modified) | 8th | - | - | - |
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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 | | Ken Zeigler (IMCA Modified) | 11th | - | - | - |
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| 9/18/2021 | Crystal Motor Speedway - Crystal, MI Great Lakes Nationals 410 Sprints - Non-Winged: Great Lakes Traditional Sprints Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Junior 1 Lites Dirt Karts, Dirt Pro Trucks, Mini Wedge, Sport Compact | Results | | Ken Zeigler (A Modifieds) | 5th | - | 2nd | 22nd |
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