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| 5/7/2021 | Williston Basin Speedway - Williston, ND Night 1 Opening Weekend Double Header! Sponsored by Knudson Consulting, LLC IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, Junior Slingshots | Results | | Hailey Mattox (Junior Slingshots) | 10th (DNF) | - | - | 6th |
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| 5/22/2021 | Williston Basin Speedway - Williston, ND MX SERVICES NIGHT AT THE RACES! TEACHER APPRECIATION NIGHT! IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, Junior Slingshots | Results | | Hailey Mattox (Junior Slingshots) | 1st | - | - | 5th |
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| 5/29/2021 | Williston Basin Speedway - Williston, ND PETES BREWHAHA NIGHT AT THE RACES & MILITARY APPRECIATION NIGHT! IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, Junior Slingshots | Results | | Hailey Mattox (Junior Slingshots) | 2nd | - | - | 7th |
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| 6/25/2021 | Williston Basin Speedway - Williston, ND NIGHT 1 - FAIR DOUBLE HEADER-FUSION FABRICATION NIGHT-JERRY MARTISNON MEMORIAL RACE! IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, Junior Slingshots | Results | | Hailey Mattox (Junior Slingshots) | - | - | - | 10th (DNF) |
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| 6/26/2021 | Williston Basin Speedway - Williston, ND NIGHT 2-FAIR DOUBLE HEADER-RED ROCK FORD NIGHT! IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, Junior Slingshots | Results | | Hailey Mattox (Junior Slingshots) | - | - | - | 5th |
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| 7/3/2021 | Williston Basin Speedway - Williston, ND TNT FIREWORKS PRESENTS-ROCK THE RACES! WESTERN RENEGADE WINGLESS SPRINTS-INK SPOT PRINTING Non-Winged Sprints, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, Junior Slingshots | Results | | Hailey Mattox (Junior Slingshots) | 5th | - | - | 5th |
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| 8/14/2021 | Williston Basin Speedway - Williston, ND 10 MINUTE BAIL BONDS & 5TH ANNUAL KIDS NIGHT AT THE RACES! IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, Junior Slingshots | Results | | Hailey Mattox (Junior Slingshots) | 4th | - | - | 8th |
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| 8/28/2021 | Williston Basin Speedway - Williston, ND COCA COLA CHAMPIONSHIP NIGHT & RABE COTE MEMORIAL 2021 IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, Junior Slingshots | Results | | Hailey Mattox (Junior Slingshots) | 3rd | - | - | 4th |
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| 9/4/2021 | Nodak Speedway - Minot, ND Motor Magic Night 2 Sprint Cars, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact, Junior Slingshots | Results | | Hailey Mattox (Junior Slingshots) | 3rd | - | - | 3rd |
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| 9/5/2021 | Nodak Speedway - Minot, ND Motor Magic Night 3 Generic 1, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact, Junior Slingshots | Results | | Hailey Mattox (Junior Slingshots) | 5th | - | - | 4th |
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| 9/17/2021 | Williston Basin Speedway - Williston, ND FALL ROUND UP -NIGHT 1! AMERICAN LEGION - IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, Junior Slingshots | Results | | Hailey Mattox (Junior Slingshots) | 5th | - | - | 7th |
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| 9/18/2021 | Williston Basin Speedway - Williston, ND FALL ROUND UP-NIGHT 2-AMERICAN LEGION Generic 1, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, Junior Slingshots | Results | | Hailey Mattox (Junior Slingshots) | 4th | - | - | 9th |
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