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| 5/9/2021 | Casino Speedway - Watertown, SD SUNDAY NIGHT THUNDER Hornets, Economy Late Models, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock | Results | | Jason Marko (WISSOTA Street Stock) | 1st | - | - | 6th |
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| 5/30/2021 | Casino Speedway - Watertown, SD Casino Speedway Memoral Hornets, Economy Late Models, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock | Results | | Jason Marko (WISSOTA Street Stock) | 2nd | - | - | 9th |
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| 6/12/2021 | Madison Speedway - Madison, MN H.O.T.R.O.D. Vintage Car Night Stock Cars, Economy Late Models, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Street Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Jason Marko (WISSOTA Street Stock) | 1st | - | - | 5th |
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| 6/20/2021 | Casino Speedway - Watertown, SD Father's Day Night Hornets, Economy Late Models, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock | Results | | Jason Marko (WISSOTA Street Stock) | 3rd | - | - | 5th |
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| 6/27/2021 | Casino Speedway - Watertown, SD AFCO Race of Champions Qualifier Night Economy Late Models, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Hornet | Results | | Jason Marko (WISSOTA Street Stock) | 1st | - | - | 13th (DNF) |
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| 7/2/2021 | Brown County Speedway - Aberdeen, SD FIREWORKS SPECTACULAR WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Jason Marko (WISSOTA Street Stock) | 8th | - | - | 13th |
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| 7/11/2021 | Casino Speedway - Watertown, SD SUNDAY NIGHT THUNDER - TOYS FOR TOTS NIGHT Economy Late Models, WISSOTA Midwest Mods, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Hornet | Results | | Jason Marko (WISSOTA Street Stock) | 1st | - | - | 6th |
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| 7/14/2021 | Casino Speedway - Watertown, SD 11th Annual USMTS Summer Slam A Modifieds: USMTS - United States Modified Touring Series WISSOTA Midwest Mods, WISSOTA Street Stock | Results | | Jason Marko (WISSOTA Street Stock) | 4th | - | - | 6th |
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| 7/24/2021 | Madison Speedway - Madison, MN Steffes Street Stock Tour Stock Cars, Economy Late Models, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Street Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Jason Marko (WISSOTA Street Stock) | 5th | - | - | 18th |
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| 7/25/2021 | Casino Speedway - Watertown, SD STEFFES Street Stock Tour WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock | Results | | Jason Marko (WISSOTA Street Stock) | 7th (DNF) | - | 3rd | 23rd (DNF) |
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| 8/1/2021 | Casino Speedway - Watertown, SD SKOR Welding Kids's Night Economy Late Models, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Hornet | Results | | Jason Marko (WISSOTA Street Stock) | 3rd | - | - | 2nd |
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| 8/15/2021 | Casino Speedway - Watertown, SD ADVANTAGE RV MOD TOUR FINALS WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Street Stock, WISSOTA Hornet | Results | | Jason Marko (WISSOTA Street Stock) | 1st | - | - | 4th |
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| 8/29/2021 | Casino Speedway - Watertown, SD Sunday Night Rain Date Economy Late Models, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Hornet | Results | | Jason Marko (WISSOTA Street Stock) | 1st | - | - | 3rd |
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| 9/5/2021 | Casino Speedway - Watertown, SD Watertown Ford Chrysler Season Championship Night Economy Late Models, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Hornet | Results | | Jason Marko (WISSOTA Street Stock) | 3rd | - | - | 4th |
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| 9/9/2021 | River Cities Speedway - Grand Forks, ND Prelude to the Johnny - NLRA Late Model Tour Championship B Modifieds, WISSOTA Midwest Mods, WISSOTA Late Model, WISSOTA Street Stock | Results | | Jason Marko (WISSOTA Midwest Mods) | - | - | - | - | | Jason Marko (WISSOTA Street Stock) | 6th | - | 2nd | DNS |
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| 9/10/2021 | River Cities Speedway - Grand Forks, ND John Seitz Memorial Night 1 & Wayne Anderson Cup Finale 410 Sprints - Winged: Northern Outlaw Sprint Association B Modifieds, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock | Results | | Jason Marko (WISSOTA Street Stock) | 6th | - | 6th | 21st |
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| 9/24/2021 | Casino Speedway - Watertown, SD 4th Annual Autumn Classic (Night #1) 410 Sprints - Winged, Economy Late Models, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Hornet | Results | | Jason Marko (WISSOTA Street Stock) | 2nd | - | - | 8th |
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| 9/25/2021 | Casino Speedway - Watertown, SD 4th Annual Autumn Classic (Night #2) Economy Late Models, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Hornet | Results | | Jason Marko (WISSOTA Street Stock) | 1st | - | - | 7th |
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