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| 3/31/2018 | Grayson County Speedway - Bells, TX First Point Race for 2018 DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, A Modifieds, Street Stocks | Results | | Clay Marr (A Modifieds) | 3rd | - | - | DNS |
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| 4/14/2018 | Grayson County Speedway - Bells, TX Restricted 'A' Class: NOW600 National Micros with NOW600 Restricted Micros Stock Non-Wing: NOW600 Non-Wing Micros DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, Stock Cars, A Modifieds, Street Stocks, 600cc Modifieds | Results | | Clay Marr (A Modifieds) | 6th (DNF) | - | - | DNS |
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| 4/28/2018 | Grayson County Speedway - Bells, TX STEM Series DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, A Modifieds, Street Stocks, Rookie Class | Results | | Clay Marr (A Modifieds) | 4th | - | 15th | - |
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| 5/5/2018 | Grayson County Speedway - Bells, TX Regular race night/ Rookie DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, Stock Cars, A Modifieds, Street Stocks, 600cc Modifieds | Results | | Clay Marr (A Modifieds) | 5th | - | - | 10th |
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| 5/12/2018 | Grayson County Speedway - Bells, TX 360 Sprint Car Bandit DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, A Modifieds, Street Stocks | Results | | Clay Marr (A Modifieds) | 3rd | - | - | 20th (DNF) |
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| 5/19/2018 | Grayson County Speedway - Bells, TX Rookie Class DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, Stock Cars, A Modifieds, Street Stocks, Rookie Class | Results | | Clay Marr (A Modifieds) | 6th | - | - | 5th |
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| 5/31/2018 | Grayson County Speedway - Bells, TX IMCA Red River Modified Tour/ IMCA TV and MAV TV will be joining us DIRTcar UMP Modifieds, A Modifieds, Street Stocks | Results | | Clay Marr (A Modifieds) | 8th (DNF) | - | 6th | 15th |
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| 6/2/2018 | Grayson County Speedway - Bells, TX Regular race DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, A Modifieds, Street Stocks | Results | | Clay Marr (A Modifieds) | 2nd | - | - | 7th |
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| 6/9/2018 | 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 | | Clay Marr (A Modifieds) | 5th | - | - | 14th (DNF) |
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| 6/16/2018 | Grayson County Speedway - Bells, TX Powder Puff Race DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, A Modifieds, B Modifieds, Street Stocks, 600cc Modifieds, Pony Stock | Results | | Clay Marr (A Modifieds) | 5th | - | - | 13th (DNF) |
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| 7/7/2018 | 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 | | Clay Marr (A Modifieds) | 5th | - | - | 8th |
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| 7/27/2018 | Rocket Raceway Park - Petty, TX DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, A Modifieds, 600cc Modifieds, Limited Sport Mod | Results | | Clay Marr (Limited Sport Mod) | 7th (DNF) | - | - | 7th |
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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 | | Clay Marr (A Modifieds) | 5th | - | - | 17th (DNF) |
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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 | | Clay Marr (A Modifieds) | 5th | - | - | 11th |
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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 | | Clay Marr (A Modifieds) | 3rd | - | - | 13th |
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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 | | Clay Marr (A Modifieds) | 1st | - | - | 9th |
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| 9/1/2018 | Grayson County Speedway - Bells, TX Regular race DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, A Modifieds, Street Stocks, 600cc Modifieds | Results | | Clay Marr (A Modifieds) | 6th | - | - | 9th |
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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 | | Clay Marr (A Modifieds) | 6th (DNF) | - | - | DNS |
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