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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 | | Mike Astrauskas (360 Sprints - Winged) | 7th | - | 5th | 24th |
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| 4/23/2021 | I-96 Speedway - Lake Odessa, MI Non Wing Challenge Night 1 DIRTcar Late Models, B Modifieds, Street Stocks, 410 Sprints - Non-Winged, Sport Compact | Results | | Mike Astrauskas (410 Sprints - Non-Winged) | 3rd | - | - | 4th |
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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 | | Mike Astrauskas (410 Sprints - Non-Winged) | 2nd | - | - | 5th |
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| 5/8/2021 | I-96 Speedway - Lake Odessa, MI 360 Sprints - Winged: ASCS National with GLSS-Great Lakes Super Sprints 410 Sprints - Non-Winged: Great Lakes Traditional Sprints with BOSS Buckeye Outlaw Sprint Series | Results | | Mike Astrauskas (360 Sprints - Winged) | 6th | - | 10th (DNF) | - | | Mike Astrauskas (410 Sprints - Non-Winged) | 5th | - | 1st | 18th |
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| 5/21/2021 | Tri-City Motor Speedway - Auburn, MI 360 Sprints - Winged: GLSS-Great Lakes Super Sprints Lightning Sprints: Great Lakes Lightning Sprints DIRTcar Late Models, Factory Stocks, Hobby Stocks, Mini Wedge, Mini Outlaws | Results | | Mike Astrauskas (360 Sprints - Winged) | 5th | - | - | 21st |
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| 5/29/2021 | Hartford Speedway - Hartford, MI 410 Sprints - Non-Winged: Great Lakes Traditional Sprints Hobby Stocks, Stock Cars | Results | | Mike Astrauskas (410 Sprints - Non-Winged) | 2nd | - | - | 6th |
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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 | | Mike Astrauskas (410 Sprints - Non-Winged) | 1st | - | - | 3rd |
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| 6/12/2021 | Butler Speedway - Quincy, MI 410 Sprints - Non-Winged: Great Lakes Traditional Sprints 410 Sprints - Winged | Results | | Mike Astrauskas (410 Sprints - Non-Winged) | 3rd | - | - | 4th |
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| 6/18/2021 | I-96 Speedway - Lake Odessa, MI Sprints On Dirt / Great Lakes Traditional Sprints 410 Sprints - Winged: SOD-Sprints On Dirt (410s) 410 Sprints - Non-Winged: Great Lakes Traditional Sprints Street Stocks, Mini Wedge, Mini Outlaws, Sport Compact | Results | | Mike Astrauskas (410 Sprints - Non-Winged) | 7th | - | - | 11th |
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| 6/19/2021 | Silver Bullet Speedway - Owendale, MI 410 Sprints - Non-Winged: Great Lakes Traditional Sprints Asphalt Mini Stocks, Hobby Stocks, Stock Cars, Sportsmans, Mini Wedge | Results | | Mike Astrauskas (410 Sprints - Non-Winged) | 1st | - | - | 3rd |
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| 7/2/2021 | I-96 Speedway - Lake Odessa, MI Great Lakes Super Sprints 360 Sprints - Winged: GLSS-Great Lakes Super Sprints B Modifieds, Street Stocks | Results | | Mike Astrauskas (360 Sprints - Winged) | 7th | - | - | 16th |
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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 | | Mike Astrauskas (360 Sprints - Winged) | 5th | - | - | 15th |
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| 7/9/2021 | Hartford Speedway - Hartford, MI 360 Sprints - Winged: GLSS-Great Lakes Super Sprints 410 Sprints - Non-Winged: Great Lakes Traditional Sprints Hobby Stocks, Stock Cars | Results | | Mike Astrauskas (360 Sprints - Winged) | 5th | - | 3rd | 20th | | Mike Astrauskas (410 Sprints - Non-Winged) | 3rd | - | - | 9th |
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| 7/10/2021 | Merritt Speedway - Merritt, MI 360 Sprints - Winged: GLSS-Great Lakes Super Sprints 410 Sprints - Non-Winged: Great Lakes Traditional Sprints Lightning Sprints: Great Lakes Lightning Sprints DIRTcar UMP Modifieds, Hobby Stocks, B Modifieds, Mini Wedge, Mini Outlaws | Results | | Mike Astrauskas (360 Sprints - Winged) | 5th | - | 2nd | 13th | | Mike Astrauskas (410 Sprints - Non-Winged) | 1st | - | - | 10th |
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| 7/30/2021 | I-96 Speedway - Lake Odessa, MI Wing Fling II 360 Sprints - Winged: GLSS-Great Lakes Super Sprints 410 Sprints - Winged: FASTonDIRT with SOD-Sprints On Dirt (410s) Street Stocks | Results | | Mike Astrauskas (360 Sprints - Winged) | 7th | - | 9th | - | | Mike Astrauskas (410 Sprints - Winged) | 7th | - | - | 17th |
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| 8/6/2021 | Tri-City Motor Speedway - Auburn, MI 360 Sprints - Winged: GLSS-Great Lakes Super Sprints 410 Sprints - Non-Winged: Great Lakes Traditional Sprints Lightning Sprints: Great Lakes Lightning Sprints | Results | | Mike Astrauskas (360 Sprints - Winged) | 6th | - | 2nd | 22nd | | Mike Astrauskas (410 Sprints - Non-Winged) | 2nd | - | - | 12th |
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| 8/13/2021 | Hartford Speedway - Hartford, MI 360 Sprints - Winged: GLSS-Great Lakes Super Sprints DIRTcar UMP Modifieds, Hobby Stocks, Stock Cars | Results | | Mike Astrauskas (360 Sprints - Winged) | 4th | - | - | 17th |
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| 8/14/2021 | Thunderbird Raceway - Muskegon, MI 360 Sprints - Winged: GLSS-Great Lakes Super Sprints Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | Mike Astrauskas (360 Sprints - Winged) | 3rd | - | - | 15th |
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| 8/27/2021 | I-96 Speedway - Lake Odessa, MI Non Wing Challenge - Night 5 DIRTcar Late Models, B Modifieds, Street Stocks, 410 Sprints - Non-Winged, Mini Wedge, Mini Outlaws, Sport Compact | Results | | Mike Astrauskas (410 Sprints - Non-Winged) | 4th | - | - | 5th |
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| 8/28/2021 | Silver Bullet Speedway - Owendale, MI Great Lakes Traditional Sprints #3 410 Sprints - Non-Winged: Great Lakes Traditional Sprints Asphalt Mini Stocks, Hobby Stocks, Stock Cars, B Modifieds, Mini Wedge | Rain Out |
| 9/3/2021 | I-96 Speedway - Lake Odessa, MI Great Lakes Sprint Showdown - Night 1 360 Sprints - Winged: GLSS-Great Lakes Super Sprints 410 Sprints - Non-Winged: Great Lakes Traditional Sprints Lightning Sprints: Great Lakes Lightning Sprints | Results | | Mike Astrauskas (360 Sprints - Winged) | 5th | - | - | 18th | | Mike Astrauskas (410 Sprints - Non-Winged) | 5th | - | - | 8th |
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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 | | Mike Astrauskas (410 Sprints - Non-Winged) | 2nd | - | - | 4th |
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| 9/10/2021 | Tri-City Motor Speedway - Auburn, MI 360 Sprints - Winged: GLSS-Great Lakes Super Sprints 410 Sprints - Non-Winged: Great Lakes Traditional Sprints Lightning Sprints: Great Lakes Lightning Sprints DIRTcar UMP Modifieds, B Modifieds | Results | | Mike Astrauskas (360 Sprints - Winged) | 8th | - | 7th | - | | Mike Astrauskas (410 Sprints - Non-Winged) | 4th | - | - | 10th |
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| 9/11/2021 | Merritt Speedway - Merritt, MI 360 Sprints - Winged: GLSS-Great Lakes Super Sprints 410 Sprints - Non-Winged: Great Lakes Traditional Sprints Lightning Sprints: Great Lakes Lightning Sprints DIRTcar UMP Modifieds, Hobby Stocks, B Modifieds | Results | | Mike Astrauskas (360 Sprints - Winged) | 6th | - | - | 17th | | Mike Astrauskas (410 Sprints - Non-Winged) | 4th | - | - | 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 | | Mike Astrauskas (410 Sprints - Non-Winged) | 2nd | - | - | 5th |
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| 10/8/2021 | I-96 Speedway - Lake Odessa, MI Roll The Dice II - Night 1 410 Sprints - Non-Winged: Great Lakes Traditional Sprints with BOSS Buckeye Outlaw Sprint Series B Modifieds, Street Stocks, Mini Wedge, Mini Outlaws, Sport Compact | Rain Out |
| 10/9/2021 | I-96 Speedway - Lake Odessa, MI Roll The Dice II - Night 2 410 Sprints - Non-Winged: Great Lakes Traditional Sprints DIRTcar Late Models, DIRTcar UMP Modifieds, Sportsmans, B Modifieds, Mini Wedge, Mini Outlaws | Results | | Mike Astrauskas (410 Sprints - Non-Winged) | - | - | - | - |
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