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| 3/12/1989 | Hagerstown Speedway - Hagerstown, MD 2nd Annual Big Winter Bash Dirt Super Late Models, Generic 1, Dirt Big Block Modifieds | Results | | Mark Plessinger (Dirt Super Late Models) | - | - | 9th | - |
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| 3/19/1989 | Hagerstown Speedway - Hagerstown, MD Regular Show Dirt Super Late Models, Street Stocks, Dirt Late Models, Pure Stock | Results | | Mark Plessinger (Dirt Late Models) | 6th | - | - | 15th |
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| 4/9/1989 | Hagerstown Speedway - Hagerstown, MD Regular Show Dirt Super Late Models, Street Stocks, Dirt Late Models, Pure Stock | Results | | Mark Plessinger (Dirt Late Models) | 12th | - | - | 10th |
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| 4/23/1989 | Hagerstown Speedway - Hagerstown, MD Regular Show + Micro Sprints Dirt Super Late Models, Winged A-Class, Street Stocks, Dirt Late Models, Pure Stock | Results | | Mark Plessinger (Dirt Late Models) | 2nd | - | - | 18th |
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| 4/30/1989 | Hagerstown Speedway - Hagerstown, MD Regular Show + Vintage Dirt Super Late Models, Street Stocks, Dirt Late Models, Pure Stock | Results | | Mark Plessinger (Dirt Late Models) | 1st | - | - | 2nd |
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| 6/4/1989 | Hagerstown Speedway - Hagerstown, MD Regular Show Dirt Super Late Models, Street Stocks, Dirt Late Models, Pure Stock | Results | | Mark Plessinger (Dirt Late Models) | 2nd | - | - | 2nd |
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| 6/18/1989 | Hagerstown Speedway - Hagerstown, MD Regular Show Dirt Super Late Models, Street Stocks, Dirt Late Models, Pure Stock | Results | | Mark Plessinger (Dirt Late Models) | 8th | - | - | DNS |
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| 6/25/1989 | Hagerstown Speedway - Hagerstown, MD Tony Armel Memorial Dirt Super Late Models, Street Stocks, Dirt Late Models, Pure Stock | Results | | Mark Plessinger (Dirt Late Models) | 2nd | - | - | 4th |
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| 7/23/1989 | Hagerstown Speedway - Hagerstown, MD Regular Show Dirt Super Late Models, Street Stocks, Dirt Late Models, Pure Stock | Results | | Mark Plessinger (Dirt Late Models) | 2nd | - | - | 3rd |
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