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| 5/14/2021 | Tri-City Motor Speedway - Auburn, MI Allstar Performance Challenge Race #1 & $1,500 to win PRO STOCK NIGHT DIRTcar Late Models: Allstar Performance Challenge Series Factory Stocks, Hobby Stocks, Sportsmans, A Modifieds, Street Stocks, Dirt Late Models, Mini Wedge, Mini Outlaws, IMCA Modified | Results | | John Miller (Factory Stocks) | 8th | - | 12th | - |
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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 | | John Miller (Factory Stocks) | 9th | - | 14th | - |
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| 5/29/2021 | Merritt Speedway - Merritt, MI MEMORIAL DAY CELEBRATION - DAY 1 DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, Stock Cars, Sportsmans, B Modifieds, Mini Wedge, Mini Outlaws | Results | | John Miller (Factory Stocks) | 6th | - | - | - |
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| 5/30/2021 | Merritt Speedway - Merritt, MI MEMORIAL DAY - DAY 2 & ALLSTAR PERFORMANCE CHALLENGE SERIES RACE #4 & UMP MODS $2000 TO WIN DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, Stock Cars, Sportsmans, B Modifieds, Mini Wedge, Mini Outlaws | Results | | John Miller (Factory Stocks) | - | - | - | 8th |
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| 6/4/2021 | Tri-City Motor Speedway - Auburn, MI FACTORY STOCK NIGHT - $2000 TO WIN DIRTcar Late Models, Factory Stocks, Hobby Stocks, Mini Wedge, Mini Outlaws, IMCA Modified | Results | | John Miller (Factory Stocks) | 8th | - | 14th | - |
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| 6/18/2021 | Tri-City Motor Speedway - Auburn, MI IMCA Mod Fast Shafts $2000 TO WIN & 4-6 CYL $1000 TO WIN Factory Stocks, Hobby Stocks, Sportsmans, Street Stocks, Mini Wedge, Mini Outlaws, IMCA Modified | Results | | John Miller (Hobby Stocks) | 2nd | - | - | 16th | | John Miller (Street Stocks) | 2nd | - | - | 16th |
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| 7/2/2021 | Tri-City Motor Speedway - Auburn, MI ALLSTAR PERFORMANCE CHALLENGE SERIES RACES DIRTcar Late Models: Allstar Performance Challenge Series Factory Stocks, Hobby Stocks, Sportsmans, Mini Wedge, Mini Outlaws, IMCA Modified | Results | | John Miller (Hobby Stocks) | 3rd | - | - | 3rd |
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| 7/3/2021 | Whittemore Speedway - Whittemore, MI GOOGY 50 & FIREWORKS Street Stocks, Asphalt Economy Trucks, Asphalt Mini Stock, Pure Stock | Results | | John Miller (Asphalt Mini Stock) | - | - | - | - |
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| 7/16/2021 | Tri-City Motor Speedway - Auburn, MI PRO STOCK NIGHT - $2500 TO WIN DIRTcar Late Models, Factory Stocks, Hobby Stocks, Sportsmans, Mini Wedge, Mini Outlaws, IMCA Modified | Results | | John Miller (Hobby Stocks) | 3rd | - | - | 6th |
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| 7/23/2021 | Tri-City Motor Speedway - Auburn, MI Challenge Series Races, 4-6 CYL NIGHT - $1500 TO WIN DIRTcar Late Models, Factory Stocks, Hobby Stocks, Sportsmans, Mini Wedge, Mini Outlaws, IMCA Modified | Results | | John Miller (Hobby Stocks) | 6th | - | 1st | - |
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| 8/6/2021 | Merritt Speedway - Merritt, MI 33RD ANNUAL WOOD TIC - DAY 1 DIRTcar Late Models: Allstar Performance Challenge Series DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, Sportsmans, B Modifieds, Mini Wedge, Mini Outlaws | Results | | John Miller (Hobby Stocks) | 2nd | 10th | - | - |
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| 8/7/2021 | Merritt Speedway - Merritt, MI 33RD ANNUAL WOOD TIC - DAY 2 | ALLSTAR PERFORMANCE CHALLENGE SERIES RACES DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, Sportsmans, B Modifieds, Mini Wedge, Mini Outlaws | Results | | John Miller (Hobby Stocks) | - | - | - | 20th |
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| 8/13/2021 | Tri-City Motor Speedway - Auburn, MI FAN APPRECIATION NIGHT DIRTcar Late Models, Factory Stocks, Hobby Stocks, Sportsmans, Mini Wedge, Mini Outlaws, IMCA Modified | Results | | John Miller (Factory Stocks) | 7th | - | 4th | - |
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| 9/18/2021 | Whittemore Speedway - Whittemore, MI Invitational Day #2 Street Stocks, Pro Legends, Asphalt Economy Trucks, Asphalt Mini Stock, Pro Late Model, Pure Stock | Results | | John Miller (Asphalt Mini Stock) | 4th | - | - | 14th |
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