| | Heat | Dash | B Feature | A Feature |
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| 7/14/2018 | Grayson County Speedway - Bells, TX Texas Wing Modified Factory Stocks, Hobby Stocks, Stock Cars, A Modifieds, Street Stocks, 600cc Modifieds | Results | | Michael McCullough (A Modifieds) | 5th | - | - | 6th |
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| 7/21/2018 | Grayson County Speedway - Bells, TX Regular race DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, A Modifieds, Street Stocks, 600cc Modifieds | Results | | Michael McCullough (A Modifieds) | 4th | - | - | 11th |
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| 7/28/2018 | Grayson County Speedway - Bells, TX Rookie Class DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, Stock Cars, A Modifieds, Street Stocks, Rookie Class, 600cc Modifieds | Results | | Michael McCullough (A Modifieds) | 3rd | - | - | 2nd |
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| 8/4/2018 | Grayson County Speedway - Bells, TX STEM Series DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, A Modifieds, Street Stocks, 600cc Modifieds | Results | | Michael McCullough (A Modifieds) | 1st | - | - | 6th |
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| 8/11/2018 | Grayson County Speedway - Bells, TX Mechanic/Staff Race DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, Stock Cars, A Modifieds, Street Stocks, 600cc Modifieds, Pony Stock | Rain Out |
| 8/18/2018 | Grayson County Speedway - Bells, TX Rookie Class DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, Stock Cars, A Modifieds, Street Stocks, Rookie Class, 600cc Modifieds | Results | | Michael McCullough (A Modifieds) | DNS | - | - | 7th |
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| 8/25/2018 | Grayson County Speedway - Bells, TX Regular race DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, A Modifieds, B Modifieds, Street Stocks, 600cc Modifieds, Pony Stock | Results | | Michael McCullough (A Modifieds) | 5th (DNF) | - | - | 12th |
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| 9/8/2018 | Grayson County Speedway - Bells, TX NON IMCA Points night (last race for the Rookie class) Factory Stocks, Hobby Stocks, Stock Cars, B Modifieds, Street Stocks, Rookie Class, 600cc Modifieds, Pony Stock | Results | | Michael McCullough (Pony Stock) | 7th | - | - | 14th |
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| 9/29/2018 | Grayson County Speedway - Bells, TX Last IMCA points race / Powder Puff race DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, A Modifieds, Street Stocks, 600cc Modifieds | Results | | Michael McCullough (A Modifieds) | 1st | - | - | 1st |
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