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| 5/16/2021 | Slinger Super Speedway - Slinger, WI Miller Lite Official Season Opener Asphalt Late Models, Asphalt Super Late Models, Sportsmans, Asphalt 4-Cylinders, Asphalt Figure 8 Stock Cars, Sport Compact, Honda Challenge | Results | | Brian Holtz (Asphalt Late Models) | 2nd | - | - | 3rd |
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| 6/6/2021 | Slinger Super Speedway - Slinger, WI Vintage Night Asphalt Late Models, Sportsmans, Dirt Late Models, Asphalt 4-Cylinders, Outlaw Hobby Stocks, Honda Challenge, Figure 8 - FWD-Open | Results | | Brian Holtz (Asphalt Late Models) | 8th (DNF) | - | - | 4th |
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| 6/13/2021 | Slinger Super Speedway - Slinger, WI Keith’s Marina/Chix 4 A Cause Race Against Cancer Asphalt Late Models, Asphalt Super Late Models, Sportsmans, Outlaws, Pro Legends, Asphalt Figure 8 Stock Cars, Honda Challenge | Results | | Brian Holtz (Asphalt Late Models) | 6th | - | - | 12th (DNF) |
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| 6/27/2021 | Slinger Super Speedway - Slinger, WI Washington County Fair Park & Conference Center FIREWORKS Asphalt Super Late Models, Asphalt Mini Stocks, Sportsmans, Asphalt 4-Cylinders, Asphalt Figure 8 Stock Cars, Sport Compact, Honda Challenge | Results | | Brian Holtz (Sportsmans) | 1st | - | - | 2nd |
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| 7/6/2021 | Slinger Super Speedway - Slinger, WI SupplyZone Slinger Nationals 200 Presented by Miller Lite and WABAM Asphalt Late Models, Asphalt Super Late Models | Results | | Brian Holtz (Asphalt Late Models) | - | - | - | 7th |
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| 7/18/2021 | Slinger Super Speedway - Slinger, WI Milwaukee Semper Fidelis All American Race Asphalt Late Models, Asphalt Super Late Models, Sportsmans, Asphalt 4-Cylinders, Asphalt Street Stocks, Asphalt Figure 8 Stock Cars | Results | | Brian Holtz (Asphalt Late Models) | 5th | - | - | 9th |
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| 8/15/2021 | Slinger Super Speedway - Slinger, WI Carl Wegner Memorial PLUS Make A Wish Night Asphalt Late Models, Asphalt Super Late Models, Sportsmans, Asphalt 4-Cylinders, Asphalt Street Stocks, Asphalt Figure 8 Stock Cars | Results | | Brian Holtz (Asphalt Late Models) | - | - | - | - | | Brian Holtz (Sportsmans) | 1st | - | - | 2nd |
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| 8/29/2021 | Slinger Super Speedway - Slinger, WI Milwaukee Tools Presents a Night at the Races Asphalt Super Late Models, Sportsmans, Outlaws, Asphalt 4-Cylinders, Asphalt Sport Mods, Asphalt Figure 8 Stock Cars | Results | | Brian Holtz (Sportsmans) | 1st | - | - | 2nd |
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| 9/5/2021 | Slinger Super Speedway - Slinger, WI Labor Day Celebration FIREWORKS Asphalt Late Models, Asphalt Super Late Models, Sportsmans, Asphalt 4-Cylinders, Asphalt Figure 8 Stock Cars, Sport Compact | Results | | Brian Holtz (Sportsmans) | 1st | - | - | 14th (DNF) |
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| 9/19/2021 | Slinger Super Speedway - Slinger, WI Wisconsin Invitational Bracket Generic 2, Honda Challenge | Results | | Brian Holtz (Honda Challenge) | 2nd | - | - | 4th |
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