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| 1/6/2021 | Cocopah Speedway - Somerton, AZ Cocopah Speedway 2021 Winter Nationals presented by Yuma Insurance IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Dennis Spencer (IMCA Hobby Stock) | - | - | - | - |
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| 4/30/2021 | Fairgrounds Speedway Cortez - Cortez, CO Hobby Stocks, B Modifieds, Street Stocks, Hornets, 600cc Modifieds, Limited Sport Mod, Sport Compact, Senior Stock | Results | | Dennis Spencer (Hobby Stocks) | 1st | - | - | 3rd |
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| 5/1/2021 | Fairgrounds Speedway Cortez - Cortez, CO Winged A-Class: NOW600 A-Class Micros Stock Non-Wing: NOW600 Non-Wing Micros Hobby Stocks, B Modifieds, Street Stocks, Hornets, 600cc Modifieds, Limited Sport Mod, Sport Compact | Results | | Dennis Spencer (Hobby Stocks) | 1st | - | - | 3rd |
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| 6/4/2021 | Fairgrounds Speedway Cortez - Cortez, CO Hobby Stocks, B Modifieds, Street Stocks, Hornets, 600cc Modifieds, Limited Sport Mod, Sport Compact, Mod Lites | Results | | Dennis Spencer (Hobby Stocks) | 1st | - | - | 2nd |
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| 6/5/2021 | Fairgrounds Speedway Cortez - Cortez, CO Hobby Stocks, B Modifieds, Street Stocks, Hornets, 600cc Modifieds, Limited Sport Mod, Sport Compact, Mod Lites | Results | | Dennis Spencer (Hobby Stocks) | 1st | - | - | 3rd |
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| 6/18/2021 | Fairgrounds Speedway Cortez - Cortez, CO Hobby Stocks, B Modifieds, Street Stocks, Hornets, 600cc Modifieds, Limited Sport Mod, Sport Compact | Results | | Dennis Spencer (Hobby Stocks) | 1st | - | - | 2nd | | Dennis Spencer (Street Stocks) | - | - | - | - |
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| 6/19/2021 | Fairgrounds Speedway Cortez - Cortez, CO Hobby Stocks, B Modifieds, Street Stocks, Hornets, 600cc Modifieds, Limited Sport Mod, Sport Compact | Results | | Dennis Spencer (Hobby Stocks) | 1st | - | - | 2nd |
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| 7/2/2021 | Fairgrounds Speedway Cortez - Cortez, CO POWRi Desert Winged Sprints at Fairgrounds Speedway Cortez Midgets: POWRi 360 Sprints - Winged, Hobby Stocks, A Modifieds, B Modifieds, Street Stocks, Hornets, 600cc Modifieds, Limited Sport Mod, Sport Compact | Results | | Dennis Spencer (Hobby Stocks) | 1st | - | - | 2nd | | Dennis Spencer (Street Stocks) | - | - | - | - |
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| 7/3/2021 | Fairgrounds Speedway Cortez - Cortez, CO POWRi Desert Winged Sprints at Fairgrounds Speedway Cortez Midgets: POWRi 360 Sprints - Winged, Hobby Stocks, A Modifieds, B Modifieds, Street Stocks, Hornets, 600cc Modifieds, Limited Sport Mod, Sport Compact | Results | | Dennis Spencer (Hobby Stocks) | 1st | - | - | 1st |
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| 7/16/2021 | Fairgrounds Speedway Cortez - Cortez, CO Dirty 30 IMCA Hobby Stock Challenge & Bomber Invasion Midgets, Factory Stocks, Hobby Stocks, B Modifieds, Street Stocks, Hornets, 600cc Modifieds, Limited Sport Mod, Sport Compact, Mod Lites | Results | | Dennis Spencer (Hobby Stocks) | 6th (DNF) | - | - | 15th (DNF) |
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| 7/17/2021 | Fairgrounds Speedway Cortez - Cortez, CO Dirty 30 IMCA Hobby Stock Challenge Midgets, Factory Stocks, Hobby Stocks, B Modifieds, Street Stocks, Hornets, 600cc Modifieds, Limited Sport Mod, Sport Compact, Mod Lites | Results | | Dennis Spencer (Hobby Stocks) | 2nd | - | - | 3rd |
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| 8/13/2021 | Fairgrounds Speedway Cortez - Cortez, CO NORTHERN NIGHTS Midgets, Hobby Stocks, Street Stocks, Hornets, 600cc Modifieds, Limited Modified, Limited Sport Mod, Sport Compact, Mod Lites | Results | | Dennis Spencer (Hobby Stocks) | 1st | - | - | 2nd |
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| 8/14/2021 | Fairgrounds Speedway Cortez - Cortez, CO Winged A-Class: NOW600 A-Class Micros Stock Non-Wing: NOW600 Non-Wing Micros Hobby Stocks, Street Stocks, Hornets, 600cc Modifieds, Limited Modified, Limited Sport Mod, Sport Compact, Mod Lites | Results | | Dennis Spencer (Hobby Stocks) | 2nd | - | - | 4th |
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| 8/27/2021 | Fairgrounds Speedway Cortez - Cortez, CO Hobby Stocks, Street Stocks, Hornets, 600cc Modifieds, Limited Sport Mod, Sport Compact, Mod Lites | Results | | Dennis Spencer (Hobby Stocks) | 4th | - | - | 2nd |
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| 8/28/2021 | Fairgrounds Speedway Cortez - Cortez, CO Winged A-Class: NOW600 A-Class Micros Stock Non-Wing: NOW600 Non-Wing Micros Hobby Stocks, Street Stocks, Hornets, 600cc Modifieds, Limited Sport Mod, Sport Compact, Mod Lites | Results | | Dennis Spencer (Hobby Stocks) | 6th (DNF) | - | - | 6th |
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