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| 5/30/2020 | Grayson County Speedway - Bells, TX Factory Stocks, Hobby Stocks, B Modifieds, 600cc Modifieds, Limited Modified, IMCA Modified, IMCA Northern SportMod, IMCA Southern SportMod | Results | | Marilyn Williams (Factory Stocks) | DNS | - | - | DNS | | Marilyn Williams (600cc Modifieds) | 3rd | - | - | 7th |
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| 6/6/2020 | Grayson County Speedway - Bells, TX Full Program Factory Stocks, Hobby Stocks, B Modifieds, 600cc Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Southern SportMod | Results | | Marilyn Williams (Factory Stocks) | 5th (DNF) | - | - | 16th | | Marilyn Williams (600cc Modifieds) | 5th | - | - | 7th |
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| 6/13/2020 | Grayson County Speedway - Bells, TX Race Program / Texas Sprint Series 305 Sprints - Winged, Factory Stocks, Hobby Stocks, B Modifieds, 600cc Modifieds, IMCA Northern SportMod, IMCA Southern SportMod | Results | | Marilyn Williams (Factory Stocks) | 6th | - | - | 21st (DNF) | | Marilyn Williams (600cc Modifieds) | 4th | - | - | 7th |
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| 6/20/2020 | Grayson County Speedway - Bells, TX Full Program Factory Stocks, Hobby Stocks, B Modifieds, 600cc Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Southern SportMod | Results | | Marilyn Williams (600cc Modifieds) | 2nd | - | - | 7th |
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| 6/27/2020 | Grayson County Speedway - Bells, TX Restricted 'A' Class: NOW600 Restricted Micros Winged A-Class: NOW600 A-Class Micros Factory Stocks, Hobby Stocks, B Modifieds, 600cc Modifieds, IMCA Northern SportMod, IMCA Southern SportMod | Results | | Marilyn Williams (600cc Modifieds) | 6th (DNF) | - | - | 9th |
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| 7/4/2020 | Grayson County Speedway - Bells, TX Full Program / Annual Firework Show Factory Stocks, Hobby Stocks, B Modifieds, Dirt Late Models, 600cc Modifieds, Limited Sport Mod, IMCA Northern SportMod | Results | | Marilyn Williams (600cc Modifieds) | 3rd | - | - | 5th |
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| 7/11/2020 | Grayson County Speedway - Bells, TX Full Program Factory Stocks, Hobby Stocks, B Modifieds, 600cc Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Southern SportMod | Results | | Marilyn Williams (600cc Modifieds) | 4th | - | - | 5th |
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| 7/18/2020 | Grayson County Speedway - Bells, TX Race Program / ASCS Elite Non Wing Sprints Factory Stocks, Hobby Stocks, A Modifieds, B Modifieds, 305 Sprints - Non-Winged, 600cc Modifieds, IMCA Northern SportMod, IMCA Southern SportMod | Results | | Marilyn Williams (600cc Modifieds) | 2nd | - | - | 14th |
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| 7/25/2020 | Grayson County Speedway - Bells, TX Full Program Factory Stocks, Hobby Stocks, B Modifieds, 600cc Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Southern SportMod | Results | | Marilyn Williams (600cc Modifieds) | 1st | - | - | 7th |
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| 8/1/2020 | Grayson County Speedway - Bells, TX Full Program / Autograph Night Factory Stocks, Hobby Stocks, 600cc Modifieds, IMCA Modified, IMCA Southern SportMod | Results | | Marilyn Williams (600cc Modifieds) | 4th | - | - | 6th |
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| 8/8/2020 | Grayson County Speedway - Bells, TX Race Program / Open Mods / Kids Back to School Back Pack Giveaway DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, B Modifieds, 600cc Modifieds, IMCA Northern SportMod, IMCA Southern SportMod | Results | | Marilyn Williams (600cc Modifieds) | 4th | - | - | 9th |
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| 8/15/2020 | Grayson County Speedway - Bells, TX Full Program / Kids Dash For Cash Night Factory Stocks, Hobby Stocks, B Modifieds, 600cc Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Southern SportMod | Results | | Marilyn Williams (600cc Modifieds) | 3rd | - | - | 9th |
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| 8/22/2020 | Grayson County Speedway - Bells, TX Race Program / Southern Topless Mods Factory Stocks, Hobby Stocks, B Modifieds, 600cc Modifieds, Limited Modified, IMCA Northern SportMod, IMCA Southern SportMod | Results | | Marilyn Williams (600cc Modifieds) | 6th | - | - | 8th |
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| 9/12/2020 | Grayson County Speedway - Bells, TX Non IMCA Points Night / Texas Sprint Series 305 Sprints - Winged, Factory Stocks, Hobby Stocks, B Modifieds, 600cc Modifieds, Limited Sport Mod | Results | | Marilyn Williams (600cc Modifieds) | 2nd | - | - | 5th |
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| 9/19/2020 | Grayson County Speedway - Bells, TX Dirt Big Block Modifieds: Texas Winged Modifieds Factory Stocks, Hobby Stocks, B Modifieds, 600cc Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Southern SportMod | Results | | Marilyn Williams (600cc Modifieds) | 4th | - | - | 15th (DNF) |
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| 9/26/2020 | Grayson County Speedway - Bells, TX Factory Stocks, Hobby Stocks, B Modifieds, 600cc Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Southern SportMod | Results | | Marilyn Williams (600cc Modifieds) | 4th | - | - | 4th |
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