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| 5/19/2018 | Fairbury Speedway - Fairbury, IL DIRTcar Late Models, DIRTcar UMP Modifieds, DIRTcar Sportsmans, B Modifieds, Street Stocks, Vintage Full Body Stock Cars | Results | | Mark Grosvenor (DIRTcar UMP Modifieds) | 4th | - | - | 12th |
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| 5/25/2018 | Daugherty Speedway - Chase, IN Practice for Super Late Models, MODS, PLM, PSC, Scrapper and Mini Wedge Dirt Super Late Models, DIRTcar UMP Modifieds, Street Stocks, Enduro, Pro Late Model, Mini Wedge | Results | | Mark Grosvenor (DIRTcar UMP Modifieds) | 2nd | - | - | 4th |
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| 5/26/2018 | Fairbury Speedway - Fairbury, IL DIRTcar Late Models, DIRTcar UMP Modifieds, DIRTcar Sportsmans, Street Stocks, Pro Late Model | Results | | Mark Grosvenor (DIRTcar UMP Modifieds) | 7th | - | 6th | - |
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| 6/2/2018 | Fairbury Speedway - Fairbury, IL DIRTcar Late Models, DIRTcar UMP Modifieds, DIRTcar Sportsmans, B Modifieds, Street Stocks | Results | | Mark Grosvenor (DIRTcar UMP Modifieds) | 2nd | - | - | 6th |
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| 7/7/2018 | Fairbury Speedway - Fairbury, IL 410 Sprints - Winged: IRA Interstate Racing Association with MOWA-Midwest Open Wheel Association Midgets: POWRi National Midgets DIRTcar Late Models, DIRTcar UMP Modifieds | Results | | Mark Grosvenor (DIRTcar UMP Modifieds) | 5th | - | - | 18th (DNF) |
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| 8/4/2018 | Fairbury Speedway - Fairbury, IL DIRTcar Late Models, DIRTcar UMP Modifieds, DIRTcar Sportsmans, B Modifieds, Street Stocks | Results | | Mark Grosvenor (DIRTcar UMP Modifieds) | 2nd | - | - | 7th |
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| 8/11/2018 | Fairbury Speedway - Fairbury, IL DIRTcar Late Models, DIRTcar UMP Modifieds, DIRTcar Sportsmans, B Modifieds, Street Stocks | Results | | Mark Grosvenor (DIRTcar UMP Modifieds) | 6th | - | - | 23rd (DNF) |
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| 8/25/2018 | Fairbury Speedway - Fairbury, IL DIRTcar Late Models, DIRTcar UMP Modifieds, DIRTcar Sportsmans, B Modifieds, Street Stocks | Results | | Mark Grosvenor (DIRTcar UMP Modifieds) | 2nd | - | - | 14th |
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| 9/1/2018 | Fairbury Speedway - Fairbury, IL DIRTcar Late Models, DIRTcar UMP Modifieds | Results | | Mark Grosvenor (DIRTcar UMP Modifieds) | 7th | - | 8th (DNF) | - |
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| 9/22/2018 | Daugherty Speedway - Chase, IN Full Racing Program - Plus Mechanics Race DIRTcar UMP Modifieds, Street Stocks, Enduro, Pro Late Model, Mini Wedge | Results | | Mark Grosvenor (DIRTcar UMP Modifieds) | 1st | - | - | 1st |
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| 9/29/2018 | Daugherty Speedway - Chase, IN Full Racing Program - Plus Powder Puff DIRTcar UMP Modifieds, Street Stocks, Enduro, Pro Late Model, Mini Wedge | Results | | Mark Grosvenor (DIRTcar UMP Modifieds) | 1st | - | - | 3rd |
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