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| 9/4/2021 | Greenbush Race Park - Greenbush, MN Season Finale Day 1 Midgets: POWRi Lightning Sprints: POWRi Minn-Kota Lightning Sprints 360 Sprints - Non-Winged, 600cc Modifieds, Sport Compact, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Street Stock | Results | | Nathan Sletto (360 Sprints - Non-Winged) | 7th | - | - | 9th (DNF) |
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| 9/5/2021 | Greenbush Race Park - Greenbush, MN Season Finale Day 2 Midgets: POWRi Lightning Sprints: POWRi Minn-Kota Lightning Sprints 360 Sprints - Non-Winged, 600cc Modifieds, Sport Compact, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Street Stock | Results | | Nathan Sletto (360 Sprints - Non-Winged) | 7th | - | - | 6th |
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| 9/17/2021 | River Cities Speedway - Grand Forks, ND Season Finale 410 Sprints - Winged: Northern Outlaw Sprint Association Lightning Sprints: POWRi Minn-Kota Lightning Sprints Midgets, Stock Cars, 305 Sprints - Non-Winged, Limited Sport Mod, IMCA Stock Car | Results | | Nathan Sletto (305 Sprints - Non-Winged) | 5th | - | - | 12th (DNF) |
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| 10/1/2021 | Dacotah Speedway - Mandan, ND Oktoberfest - Night 1 Hobby Stocks, Non-Winged Sprints, Semi-Pro Legends, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Sport Compact, WISSOTA Street Stock | Results | | Nathan Sletto (Non-Winged Sprints) | 3rd | 4th | - | - |
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| 10/2/2021 | Dacotah Speedway - Mandan, ND Oktoberfest - Night 2 Hobby Stocks, Non-Winged Sprints, Semi-Pro Legends, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Sport Compact, WISSOTA Street Stock | Results | | Nathan Sletto (Non-Winged Sprints) | - | - | - | 4th |
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