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| 3/13/2021 | Antioch Speedway - Antioch, CA Wingless Sprints, Dwarf Cars, Hobby Stocks, Super Stocks Hobby Stocks, Stock Cars, Non-Winged Sprints, Dwarf, IMCA Northern SportMod | Results | | David Michael Rosa (Dwarf) | 5th | - | - | 5th |
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| 3/20/2021 | Antioch Speedway - Antioch, CA IMCA Modifieds, IMCA Sport Modifieds, IMCA Stock Cars, Dwarf Cars Dwarf, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | David Michael Rosa (Dwarf) | 2nd | - | - | 12th |
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| 4/3/2021 | Antioch Speedway - Antioch, CA IMCA Modifieds, IMCA Sport Modifieds, IMCA Stock Cars, Dwarf Cars Dwarf, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | David Michael Rosa (Dwarf) | 1st | - | - | 16th |
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| 4/10/2021 | Antioch Speedway - Antioch, CA IMCA Modifieds, IMCA Sport Modifieds, Tri-State Stock Cars/Super Stocks, Dwarf Cars Stock Cars, Dwarf, IMCA Modified, IMCA Northern SportMod | Results | | David Michael Rosa (Dwarf) | 4th | - | - | 14th |
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| 4/24/2021 | Antioch Speedway - Antioch, CA Wingless Sprints, Dwarf Cars, Hobby Stocks, Super Stocks Hobby Stocks, Stock Cars, Non-Winged Sprints, Dwarf | Results | | David Michael Rosa (Dwarf) | 2nd | - | - | 18th |
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| 5/8/2021 | Antioch Speedway - Antioch, CA Mother's Day: Mini Vans, Wingless Sprint Cars, IMCA Stock Cars, Dwarf Cars Non-Winged Sprints, Dwarf, Generic 1, IMCA Stock Car | Results | | David Michael Rosa (Dwarf) | 4th | - | - | 7th |
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| 5/14/2021 | Quincy Speedway - QUINCY, CA National #3 night 1 Dwarf: Western States Dwarf Car Association Sportsman Dwarf, Veteran Dwarf, Pro Dwarf | Results | | David Michael Rosa (Pro Dwarf) | 8th | - | 12th | - |
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| 5/15/2021 | Quincy Speedway - QUINCY, CA National #3 night 2 Dwarf: Western States Dwarf Car Association Sportsman Dwarf, Veteran Dwarf, Pro Dwarf | Results | | David Michael Rosa (Pro Dwarf) | 6th | - | 11th | 13th |
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| 6/5/2021 | Antioch Speedway - Antioch, CA Wingless Sprints, Dwarf Cars, Hobby Stocks, Mini Stocks Factory Stocks, Hobby Stocks, Non-Winged Sprints, Dwarf, Generic 1 | Results | | David Michael Rosa (Dwarf) | 1st | - | - | 7th |
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| 6/11/2021 | Petaluma Speedway - Petaluma, CA National #4 night 1 Dwarf: Western States Dwarf Car Association Sportsman Dwarf, Veteran Dwarf, Pro Dwarf | Results | | David Michael Rosa (Pro Dwarf) | 8th | - | 12th | - |
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| 6/12/2021 | Petaluma Speedway - Petaluma, CA National #4 night 2 Dwarf: Western States Dwarf Car Association Non-Winged Sprints, Sportsman Dwarf, Veteran Dwarf, Pro Dwarf | Results | | David Michael Rosa (Pro Dwarf) | 3rd | - | 12th | 11th |
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| 6/19/2021 | Antioch Speedway - Antioch, CA 600 Micro Sprint Non-Wing, IMCA Stock Cars, Hobby Stocks, Dwarf Cars Hobby Stocks, Non-Winged Sprints, 1200cc Outlaws Winged Minis, Dwarf, IMCA Stock Car | Results | | David Michael Rosa (Dwarf) | DNS | - | - | 14th |
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| 7/16/2021 | Antioch Speedway - Antioch, CA National #5 night 1 Dwarf: Western States Dwarf Car Association Sportsman Dwarf, Veteran Dwarf, Pro Dwarf | Results | | David Michael Rosa (Pro Dwarf) | 5th | - | - | 14th |
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| 7/17/2021 | Antioch Speedway - Antioch, CA National #5 night 2 Dwarf: Western States Dwarf Car Association Sportsman Dwarf, Veteran Dwarf, Pro Dwarf | Results | | David Michael Rosa (Pro Dwarf) | 3rd | - | - | 14th |
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| 7/24/2021 | Antioch Speedway - Antioch, CA Wingless Sprints, Dwarf Cars, Hobby Stocks, Mini Stocks Factory Stocks, Hobby Stocks, Non-Winged Sprints, Dwarf | Results | | David Michael Rosa (Dwarf) | 4th | - | - | 13th |
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| 9/18/2021 | Antioch Speedway - Antioch, CA Wingless Sprints, Hobby Stocks, Dwarf Cars, Mini Stocks Factory Stocks, Hobby Stocks, Non-Winged Sprints, Dwarf | Results | | David Michael Rosa (Dwarf) | 1st | - | - | 4th |
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| 9/24/2021 | Marysville Raceway - Marysville, CA National #7 night 1 Dwarf: Western States Dwarf Car Association Sportsman Dwarf, Veteran Dwarf, Pro Dwarf | Results | | David Michael Rosa (Pro Dwarf) | 6th | - | 5th | 20th |
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| 9/25/2021 | Marysville Raceway - Marysville, CA National #7 night 2 Dwarf: Western States Dwarf Car Association Sportsman Dwarf, Veteran Dwarf, Pro Dwarf | Results | | David Michael Rosa (Pro Dwarf) | 3rd | - | 18th | - |
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| 10/22/2021 | Antioch Speedway - Antioch, CA Dwarf Car Mania II Night #1 Dirt Late Models, Dwarf | Results | | David Michael Rosa (Dwarf) | 1st | - | - | 7th |
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| 10/23/2021 | Antioch Speedway - Antioch, CA Dwarf Car Mania II Night #2 Hobby Stocks, Dwarf | Results | | David Michael Rosa (Dwarf) | - | - | - | 6th |
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