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| 4/23/2021 | Corrigan Oil Speedway - Mason, MI NorthsideTowing.net Big 8 Super Late Model Series presented by Auto Value Parts Stores Race #1 Asphalt Late Models, Bandits, Asphalt Sportsman Late Models, Asphalt Small Block Modifieds, Pony Stock, Pure Stock | Results | | Bill Butler (Asphalt Small Block Modifieds) | DNS | - | - | 12th |
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| 4/30/2021 | Corrigan Oil Speedway - Mason, MI Howard Hanna Real Estate Executive Modified Challenge Series Race #1 Street Stocks, Bandits, Asphalt Sportsman Late Models, Asphalt 4-Cylinders, Asphalt Small Block Modifieds, Pony Stock | Results | | Bill Butler (Asphalt Small Block Modifieds) | 5th | - | - | 17th |
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| 5/14/2021 | Corrigan Oil Speedway - Mason, MI Howard Hanna Real Estate Executives Modified Challenge Series Race #2 Street Stocks, Bandits, Asphalt Sportsman Late Models, Asphalt 4-Cylinders, Asphalt Small Block Modifieds, Pony Stock | Results | | Bill Butler (Asphalt Small Block Modifieds) | 7th | - | 5th | 19th |
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| 6/18/2021 | Corrigan Oil Speedway - Mason, MI Northside Towing.net Big 8 Super Late Model Series presented by Auto Value Asphalt Late Models, Bandits, Asphalt Sportsman Late Models, Asphalt 4-Cylinders, Asphalt Small Block Modifieds, Pony Stock, Pure Stock | Results | | Bill Butler (Asphalt Small Block Modifieds) | 5th | - | - | 10th |
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| 7/9/2021 | Corrigan Oil Speedway - Mason, MI I-500 Night! Friday night under the lights! Street Stocks, Bandits, Asphalt Sportsman Late Models, Asphalt 4-Cylinders, Asphalt Small Block Modifieds, Pony Stock | Results | | Bill Butler (Asphalt Small Block Modifieds) | 2nd | - | - | 8th |
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| 7/28/2021 | Corrigan Oil Speedway - Mason, MI NorthsideTowing.net Big 8 Super Late Model Series! Modified Challenge Series Race #5! #PrimeTime Asphalt Late Models, Asphalt Small Block Modifieds | Results | | Bill Butler (Asphalt Small Block Modifieds) | 6th | - | - | 19th (DNF) |
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| 8/13/2021 | Corrigan Oil Speedway - Mason, MI Northside Towing.net Big 8 Outlaw Super Late Model Series, VARC - MMHOF, MARFC, Old Timers Night! Asphalt Late Models, Street Stocks, Bandits, Asphalt 4-Cylinders, Asphalt Small Block Modifieds, Pony Stock | Results | | Bill Butler (Asphalt Small Block Modifieds) | 3rd | - | - | 11th |
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| 8/20/2021 | Corrigan Oil Speedway - Mason, MI Big 8 Series Championship, Modified Season Championship, Street Stock Championship, Autograph Night! Asphalt Late Models, Street Stocks, Bandits, Asphalt 4-Cylinders, Asphalt Small Block Modifieds, Pony Stock | Results | | Bill Butler (Asphalt Small Block Modifieds) | 6th | - | - | 8th |
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| 9/5/2021 | Corrigan Oil Speedway - Mason, MI Annual Harvest 100! Asphalt Late Models, Street Stocks, Bandits, Semi-Pro Legends, Asphalt Sportsman Late Models, Asphalt 4-Cylinders, Asphalt Small Block Modifieds, Pony Stock, Pure Stock, Figure 8 - FWD Stock | Results | | Bill Butler (Asphalt Small Block Modifieds) | - | - | - | 18th |
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