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| 5/1/2021 | Diamond Park Speedway - Murfreesboro, AR Regular Race Night Factory Stocks, Sportsmans, Young Guns, Hornets, Pure Stock, IMCA Modified, IMCA Mod Lite | Results | | Tim McDonald (IMCA Modified) | DNS | - | - | DNS |
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| 5/15/2021 | Diamond Park Speedway - Murfreesboro, AR Regular Race Night with $1K to Win Pure Stock Factory Stocks, Sportsmans, Young Guns, Hornets, Pure Stock, IMCA Modified, IMCA Mod Lite | Results | | Tim McDonald (IMCA Modified) | 3rd | - | - | 2nd |
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| 5/29/2021 | Diamond Park Speedway - Murfreesboro, AR Memorial Weekend Spectacular Race Night with Modlites $1K to Win $100 to Start Factory Stocks, Sportsmans, Young Guns, Hornets, Limited Sport Mod, Pure Stock, IMCA Modified, IMCA Mod Lite | Results | | Tim McDonald (IMCA Modified) | 4th | - | - | 8th |
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| 6/12/2021 | Diamond Park Speedway - Murfreesboro, AR Regular Race Night plus Kids Power Wheels Demo Derby Factory Stocks, Sportsmans, Young Guns, Hornets, Pure Stock, IMCA Modified, IMCA Mod Lite | Results | | Tim McDonald (IMCA Modified) | 4th | - | - | 4th |
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| 6/19/2021 | Diamond Park Speedway - Murfreesboro, AR Regular Race Night Plus Super Street Stocks Debut Factory Stocks, Hobby Stocks, Sportsmans, Dirt Late Models, Young Guns, Hornets, Pure Stock, IMCA Modified, IMCA Mod Lite | Results | | Tim McDonald (IMCA Modified) | 3rd | - | - | 2nd |
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| 6/25/2021 | Texarkana 67 Speedway - Texarkana, AR GRAND OPENING NIGHT Factory Stocks, Hobby Stocks, A Modifieds, Limited Sport Mod, Dirt 4 cyl Modifieds, IMCA Modified | Results | | Tim McDonald (A Modifieds) | 5th | - | - | 7th |
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| 7/3/2021 | Diamond Park Speedway - Murfreesboro, AR Tex Myers 8 Ball Classic $888 to Win in Modlites, $1K to win in Pure Stock Factory Stocks, Sportsmans, Young Guns, Hornets, Pure Stock, IMCA Modified, IMCA Mod Lite | Results | | Tim McDonald (IMCA Modified) | 4th (DNF) | - | - | DNS |
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| 7/10/2021 | Diamond Park Speedway - Murfreesboro, AR Regular Race Night Plus Super Street Stocks! Factory Stocks, Hobby Stocks, Sportsmans, Young Guns, Hornets, Pure Stock, IMCA Modified, IMCA Mod Lite | Results | | Tim McDonald (IMCA Modified) | 2nd | - | - | 2nd |
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| 7/17/2021 | Diamond Park Speedway - Murfreesboro, AR $500 Pure Stock plus Regular Points Night Factory Stocks, Sportsmans, Hornets, Pure Stock, IMCA Modified, IMCA Mod Lite | Results | | Tim McDonald (IMCA Modified) | 6th | - | - | 8th |
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| 7/24/2021 | Diamond Park Speedway - Murfreesboro, AR Regular Race Night with $1K to Win Pure Stock Factory Stocks, Sportsmans, Hornets, Pure Stock, IMCA Modified, IMCA Mod Lite | Results | | Tim McDonald (IMCA Modified) | 2nd | - | - | 1st |
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| 10/2/2021 | Boothill Speedway - Greenwood, LA Advanced Powder Coating Weekly Racing Series Factory Stocks, B Modifieds, CRUSA Dirt Late Models, Limited Modified, Sport Compact | Results | | Tim McDonald (Limited Modified) | 6th | - | - | 13th |
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| 10/8/2021 | Ark-La-Tex Speedway - Vivian, LA O'Reilly's Auto Parts Cajun Classic Factory Stocks, B Modifieds, Limited Modified | Results | | Tim McDonald (Limited Modified) | 7th | - | 4th | 14th |
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| 10/9/2021 | Ark-La-Tex Speedway - Vivian, LA O'Reilly's Auto Parts Cajun Classic Factory Stocks, Limited Modified, Sport Compact | Results | | Tim McDonald (Limited Modified) | 7th | - | 4th | 14th |
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| 10/16/2021 | Boothill Speedway - Greenwood, LA 7th Annual Battle of Boothill - Night 2 CRUSA Dirt Late Models: Crate Racin' USA Dirt Late Model Series Factory Stocks, Limited Modified | Results | | Tim McDonald (Limited Modified) | 5th | - | - | 11th |
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| 11/3/2021 | Boothill Speedway - Greenwood, LA Summit USRA Southern Nationals Practice Night USRA Modifieds: USRA American Racer Modified Series USRA Limited Mods, USRA Factory Stocks, USRA Tuners | Results | | Tim McDonald (USRA Limited Mods) | - | - | - | - |
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| 11/4/2021 | Boothill Speedway - Greenwood, LA Summit USRA Southern Nationals USRA Modifieds: USRA American Racer Modified Series USRA Limited Mods, USRA Factory Stocks, USRA Tuners | Results | | Tim McDonald (USRA Limited Mods) | 9th | - | DNS | - |
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| 11/5/2021 | Boothill Speedway - Greenwood, LA Summit USRA Southern Nationals USRA Modifieds: USRA American Racer Modified Series USRA Limited Mods, USRA Factory Stocks, USRA Tuners | Results | | Tim McDonald (USRA Limited Mods) | 9th | - | DNS | - |
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| 11/6/2021 | Boothill Speedway - Greenwood, LA Summit USRA Southern Nationals USRA Modifieds: USRA American Racer Modified Series USRA Limited Mods, USRA Factory Stocks, USRA Tuners | Results | | Tim McDonald (USRA Limited Mods) | - | - | 16th | - |
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