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| 4/18/2021 | Interstate Speedway (SD) - Jefferson, SD IMCA Frostbuster IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brody Spreng (IMCA Northern SportMod) | 3rd | - | - | 6th |
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| 4/25/2021 | Interstate Speedway (SD) - Jefferson, SD IMCA Weekly Racing IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brody Spreng (IMCA Northern SportMod) | 5th | - | - | 13th |
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| 5/2/2021 | Interstate Speedway (SD) - Jefferson, SD IMCA Weekly Racing IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brody Spreng (IMCA Northern SportMod) | 5th | - | - | 9th |
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| 5/9/2021 | Interstate Speedway (SD) - Jefferson, SD IMCA Weekly Series IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brody Spreng (IMCA Northern SportMod) | 4th | - | - | 12th (DNF) |
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| 5/16/2021 | Interstate Speedway (SD) - Jefferson, SD IMCA Weekly Series Dirt Late Models: Tri-State Late Models IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brody Spreng (IMCA Northern SportMod) | 4th | - | - | 7th |
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| 5/23/2021 | Interstate Speedway (SD) - Jefferson, SD IMCA Weekly Series IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brody Spreng (IMCA Northern SportMod) | 4th | - | - | 4th |
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| 5/30/2021 | Interstate Speedway (SD) - Jefferson, SD IMCA Weekly Series IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brody Spreng (IMCA Northern SportMod) | 2nd | - | - | 4th |
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| 5/31/2021 | Park Jefferson International Speedway - Jefferson, SD Memorial Day Duels $1,000 to win IMCA Modifieds/Stock Cars/RACESavers plus IMCA Sport Mods & Hobbies B Modifieds, Street Stocks, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Brody Spreng (IMCA Northern SportMod) | 5th | - | - | 9th |
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| 6/6/2021 | Interstate Speedway (SD) - Jefferson, SD IMCA Weekly Series B Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brody Spreng (IMCA Northern SportMod) | 4th | - | - | 6th |
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| 6/13/2021 | Interstate Speedway (SD) - Jefferson, SD IMCA Weekly Series IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brody Spreng (IMCA Northern SportMod) | 4th | - | - | 5th |
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| 6/20/2021 | Interstate Speedway (SD) - Jefferson, SD IMCA Weekly Series IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brody Spreng (IMCA Northern SportMod) | 2nd | - | - | 7th |
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| 6/27/2021 | Interstate Speedway (SD) - Jefferson, SD IMCA Weekly Series IMCA Modified: Midwest Madness Tour IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brody Spreng (IMCA Northern SportMod) | 3rd | - | - | 4th |
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| 7/4/2021 | Interstate Speedway (SD) - Jefferson, SD 4th of July Racing IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brody Spreng (IMCA Northern SportMod) | 3rd | - | - | 13th (DNF) |
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| 7/11/2021 | Interstate Speedway (SD) - Jefferson, SD IMCA Mid Season Championship IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brody Spreng (IMCA Northern SportMod) | 4th | - | - | 2nd |
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| 7/18/2021 | Interstate Speedway (SD) - Jefferson, SD IMCA Weekly Racing IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brody Spreng (IMCA Northern SportMod) | 4th (DNF) | - | - | 8th |
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| 7/25/2021 | Interstate Speedway (SD) - Jefferson, SD IMCA Weekly Racing IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brody Spreng (IMCA Northern SportMod) | 2nd | - | - | 5th |
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| 8/1/2021 | Interstate Speedway (SD) - Jefferson, SD IMCA Weekly Racing IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brody Spreng (IMCA Northern SportMod) | 6th | - | - | 10th |
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| 8/8/2021 | Interstate Speedway (SD) - Jefferson, SD IMCA Weekly Racing IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brody Spreng (IMCA Northern SportMod) | 2nd | - | - | 1st |
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| 8/15/2021 | Interstate Speedway (SD) - Jefferson, SD IMCA Weekly Racing IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brody Spreng (IMCA Northern SportMod) | 7th | - | - | 7th |
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| 8/22/2021 | Interstate Speedway (SD) - Jefferson, SD IMCA Weekly Racing IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brody Spreng (IMCA Northern SportMod) | 2nd | - | - | 10th (DNF) |
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| 8/29/2021 | Interstate Speedway (SD) - Jefferson, SD IMCA Weekly Racing IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brody Spreng (IMCA Northern SportMod) | 4th | - | - | 10th |
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| 9/3/2021 | Interstate Speedway (SD) - Jefferson, SD Agrivision Equipment Night Dirt Late Models: Tri-State Late Models IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brody Spreng (IMCA Northern SportMod) | 1st | - | - | 5th |
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| 9/19/2021 | Interstate Speedway (SD) - Jefferson, SD IMCA Weekly Racing 305 Sprints - Winged, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA RaceSaver Sprint Car, IMCA Sport Compact | Results | | Brody Spreng (IMCA Northern SportMod) | 1st | - | - | 13th |
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| 9/26/2021 | Interstate Speedway (SD) - Jefferson, SD Season Championship IMCA Racing IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brody Spreng (IMCA Northern SportMod) | 1st | - | - | 1st |
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