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| 5/23/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds | Results | | Bob Dvorak (305 Sprints - Winged) | 3rd | - | - | 1st |
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| 6/6/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds, Vintage Modifieds | Results | | Bob Dvorak (305 Sprints - Winged) | 2nd | - | - | 5th |
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| 6/13/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds, Vintage Full Body Stock Cars | Results | | Bob Dvorak (305 Sprints - Winged) | 2nd | - | - | 3rd |
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| 6/20/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds | Results | | Bob Dvorak (305 Sprints - Winged) | 3rd | - | - | 3rd |
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| 6/27/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds | Results | | Bob Dvorak (305 Sprints - Winged) | 1st | - | - | 1st |
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| 7/4/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds | Results | | Bob Dvorak (305 Sprints - Winged) | 2nd | - | - | 1st |
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| 7/18/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds | Results | | Bob Dvorak (305 Sprints - Winged) | 1st | - | - | 5th |
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| 7/25/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds, Vintage Modifieds | Results | | Bob Dvorak (305 Sprints - Winged) | 3rd | - | - | 7th |
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| 8/1/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds | Results | | Bob Dvorak (305 Sprints - Winged) | 2nd | - | - | 2nd |
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| 8/8/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds | Results | | Bob Dvorak (305 Sprints - Winged) | 4th | - | - | 4th |
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| 8/15/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds | Results | | Bob Dvorak (305 Sprints - Winged) | 1st | - | - | 7th |
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| 8/20/2021 | Wagner Speedway - Wagner, SD Week 15 Dirt Late Models, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA RaceSaver Sprint Car, IMCA Sport Compact | Results | | Bob Dvorak (IMCA RaceSaver Sprint Car) | 5th | - | - | 9th (DNF) |
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| 8/27/2021 | Wagner Speedway - Wagner, SD Championship Dirt Late Models, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA RaceSaver Sprint Car, IMCA Sport Compact | Results | | Bob Dvorak (IMCA RaceSaver Sprint Car) | 3rd | - | - | 2nd |
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