| | Heat | Dash | B Feature | A Feature |
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| 3/27/2021 | Merced Speedway - Merced, CA Race #3 Hobby Stocks, A Modifieds, B Modifieds, Vintage Modifieds, IMCA Modified, IMCA Northern SportMod | Results | | Donald Hiser (Hobby Stocks) | 2nd | - | - | 14th |
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| 4/16/2021 | Merced Speedway - Merced, CA Al Miller Memorial Race #5 Hobby Stocks, A Modifieds, B Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | Donald Hiser (Hobby Stocks) | 4th | - | - | 16th |
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| 7/9/2021 | Merced Speedway - Merced, CA Race #16 Midgets: USAC Western States Midgets 360 Sprints - Non-Winged: USAC West Coast Sprint Cars Hobby Stocks, A Modifieds, Mini Wedge | Results | | Donald Hiser (Hobby Stocks) | 8th | - | - | 11th |
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| 7/24/2021 | Merced Speedway - Merced, CA Race #17 Hobby Stocks, 360 Sprints - Non-Winged, Vintage Modifieds, Pony Stock, IMCA Stock Car | Results | | Donald Hiser (Hobby Stocks) | 4th | - | - | 11th |
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| 8/13/2021 | Ocean Speedway - Watsonville, CA Taco Bravo Round # 18 360 Sprints - Winged, Hobby Stocks, A Modifieds, B Modifieds, Street Stocks | Results | | Donald Hiser (Hobby Stocks) | 4th | - | - | 9th |
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| 8/20/2021 | Merced Speedway - Merced, CA Ed Parker Memorial Night 1 Hobby Stocks, A Modifieds, B Modifieds, IMCA Stock Car | Results | | Donald Hiser (Hobby Stocks) | 2nd | - | - | 9th |
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| 8/21/2021 | Merced Speedway - Merced, CA Ed Parker Memorial Night 2 Hobby Stocks, A Modifieds, B Modifieds, IMCA Stock Car | Results | | Donald Hiser (Hobby Stocks) | 3rd | - | - | 9th |
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| 10/23/2021 | Chowchilla Barn Burner - Chowchilla, CA Race # 1 presented by Sheridan Racing Adult Heavy, Restricted Box Stock, 6.5 Pure Stock Intek, Flat Stock Flatheads Med, Flat Adult Clone Heavy, Flat Stock Flathead Med Heavy, 250 Winged Outlaw, 500 Winged Open Outlaw, Junior Sportsman Dirt Karts, Clone Medium Dirt Karts | Results | | Donald Hiser (Clone Medium Dirt Karts) | 3rd | - | - | 3rd |
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| 11/27/2021 | Chowchilla Barn Burner - Chowchilla, CA Race # 3 Adult Heavy, Restricted Box Stock, 6.5 Pure Stock Intek, Flat Stock Flatheads Med, Flat Adult Clone Heavy, Flat Stock Flathead Med Heavy, 250 Winged Outlaw, 500 Winged Open Outlaw, Junior Sportsman Dirt Karts, Clone Medium Dirt Karts | Results | | Donald Hiser (Clone Medium Dirt Karts) | 2nd | - | - | 12th |
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| 11/28/2021 | Chowchilla Barn Burner - Chowchilla, CA Race # 4 presented by Botelho Farms & Goularte Adult Heavy, Restricted Box Stock, 6.5 Pure Stock Intek, Flat Stock Flatheads Med, Flat Adult Clone Heavy, Flat Stock Flathead Med Heavy, 250 Winged Outlaw, 500 Winged Open Outlaw, Junior Sportsman Dirt Karts, Clone Medium Dirt Karts | Results | | Donald Hiser (6.5 Pure Stock Intek) | 3rd | - | - | 8th | | Donald Hiser (Clone Medium Dirt Karts) | 2nd | - | - | 13th |
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