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| 5/1/2021 | Southern Oklahoma Speedway - Ardmore, OK TOMS A Modifieds: TOMS - Touring Outlaw Modified Series Hobby Stocks, Stock Cars, 600cc Modifieds, Limited Sport Mod, IMCA Stock Car | Results | | Rance Lewellen (600cc Modifieds) | 11th | - | 13th | - |
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| 5/8/2021 | Southern Oklahoma Speedway - Ardmore, OK Regular Night of Racing Hobby Stocks, Stock Cars, 600cc Modifieds, Limited Sport Mod, IMCA Modified, IMCA Stock Car | Results | | Rance Lewellen (600cc Modifieds) | 4th | - | 10th | 18th |
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| 5/15/2021 | Grayson County Speedway - Bells, TX Race Program Factory Stocks, Hobby Stocks, 600cc Modifieds, IMCA Modified, IMCA Southern SportMod | Results | | Rance Lewellen (600cc Modifieds) | 3rd | - | - | 6th |
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| 5/22/2021 | Southern Oklahoma Speedway - Ardmore, OK Regular Night of Racing Hobby Stocks, Stock Cars, 600cc Modifieds, Limited Sport Mod, IMCA Modified | Results | | Rance Lewellen (600cc Modifieds) | 2nd | - | - | - |
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| 5/29/2021 | Southern Oklahoma Speedway - Ardmore, OK Regular Night of Racing - Topless Mods Hobby Stocks, 600cc Modifieds, Limited Modified | Results | | Rance Lewellen (600cc Modifieds) | 3rd | - | 8th | - |
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| 6/12/2021 | Southern Oklahoma Speedway - Ardmore, OK Regular Night Racing - Hobby/Factory, Eco Mods, Stock Car, Sport Mods Hobby Stocks, Stock Cars, 600cc Modifieds, Limited Sport Mod | Results | | Rance Lewellen (600cc Modifieds) | 3rd | - | 10th | - |
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| 7/17/2021 | Grayson County Speedway - Bells, TX Race Program / TBA Factory Stocks, Hobby Stocks, 600cc Modifieds, Limited Modified, IMCA Southern SportMod | Results | | Rance Lewellen (600cc Modifieds) | 2nd | - | - | 6th |
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| 7/24/2021 | Grayson County Speedway - Bells, TX Full Program Factory Stocks, Hobby Stocks, 600cc Modifieds, IMCA Modified, IMCA Southern SportMod | Results | | Rance Lewellen (600cc Modifieds) | 1st | - | - | 8th |
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| 8/7/2021 | Grayson County Speedway - Bells, TX Full Program Factory Stocks, Hobby Stocks, 600cc Modifieds, IMCA Modified, IMCA Southern SportMod | Results | | Rance Lewellen (600cc Modifieds) | 3rd | - | - | 5th |
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| 8/21/2021 | Grayson County Speedway - Bells, TX Full Program Factory Stocks, Hobby Stocks, 600cc Modifieds, IMCA Modified, IMCA Southern SportMod | Results | | Rance Lewellen (600cc Modifieds) | 5th | - | - | 14th (DNF) |
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| 9/4/2021 | Grayson County Speedway - Bells, TX Full Program Non - IMCA Mod Points Night Factory Stocks, Hobby Stocks, 600cc Modifieds, IMCA Modified, IMCA Southern SportMod | Results | | Rance Lewellen (600cc Modifieds) | 2nd | - | - | 8th |
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| 9/11/2021 | Grayson County Speedway - Bells, TX Race Program / TSS Sprints Factory Stocks, Hobby Stocks, 600cc Modifieds, IMCA Southern SportMod, IMCA RaceSaver Sprint Car | Results | | Rance Lewellen (600cc Modifieds) | 5th | - | - | 5th |
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| 9/18/2021 | Grayson County Speedway - Bells, TX Full Program Factory Stocks, Hobby Stocks, 600cc Modifieds, IMCA Modified, IMCA Southern SportMod | Results | | Rance Lewellen (600cc Modifieds) | 4th | - | - | 7th |
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| 9/25/2021 | Grayson County Speedway - Bells, TX Race Program / Toms - Touring Outlaw Modified Series A Modifieds: TOMS - Touring Outlaw Modified Series Factory Stocks, Hobby Stocks, 600cc Modifieds, IMCA Southern SportMod | Results | | Rance Lewellen (600cc Modifieds) | 3rd | - | - | 15th (DNF) |
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| 10/9/2021 | Grayson County Speedway - Bells, TX Patsy Peters Memorial Race Factory Stocks, Hobby Stocks, Stock Cars, A Modifieds, 600cc Modifieds, Limited Sport Mod | Results | | Rance Lewellen (600cc Modifieds) | - | - | - | 10th |
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