| | Heat | Dash | B Feature | A Feature |
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| 5/5/2018 | Enid Speedway - Enid, OK Twister Nationals Midwest Modifieds, Winged Outlaw, Dirt Late Models | Results | | Mark Harrison (Midwest Modifieds) | 4th | - | - | 10th | | Mark Harrison (Dirt Late Models) | 4th | - | - | - |
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| 6/2/2018 | Elk City Motorsports Park - Elk City, OK Factory Stocks, Stock Cars, A Modifieds, Enduro, Limited Sport Mod | Results | | Mark Harrison (Limited Sport Mod) | 4th | - | - | 6th |
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| 7/21/2018 | Oklahoma Sports Park - Ada, OK Racing all classes + Sooner Late Model Series DIRTcar Factory Stock, B Modifieds, Asphalt Sport Mods, Pro Late Model, Limited Sport Mod | Results | | Mark Harrison (Pro Late Model) | 3rd | - | - | 16th |
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| 8/4/2018 | Devil's Bowl Speedway - Mesquite, TX Dirt Late Models: XR Southern Storm | Results | | Mark Harrison (Dirt Late Models) | 2nd | - | - | 5th |
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| 10/28/2018 | Red Dirt Raceway - Meeker, OK 5th Annual Mark Robinson Memorial/Post Race Pit Party Asphalt Mini Stocks, Midwest Modifieds, Restricted 'A' Class, Stock Non-Wing, Hornets, Pure Stock | Results | | Mark Harrison (Midwest Modifieds) | 2nd | - | - | 18th |
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