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| 4/17/2021 | Ogilvie Raceway - Ogilvie, MN Saturday Night Shootout WISSOTA Midwest Mods, WISSOTA Mod Four, WISSOTA Modifieds, WISSOTA Street Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Doug Koski (WISSOTA Super Stock) | 6th | - | - | 10th |
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| 5/14/2021 | Gondik Law Speedway - Superior, WI Rescheduled 60th Season Opener WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Doug Koski (WISSOTA Super Stock) | 4th | - | - | 9th |
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| 5/21/2021 | Gondik Law Speedway - Superior, WI Friday Night at the Races WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Doug Koski (WISSOTA Super Stock) | 7th | - | - | 5th |
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| 5/22/2021 | Hibbing Raceway - Hibbing, MN Season Opener! WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Rain Out |
| 5/23/2021 | Granite City Motor Park - Sauk Rapids, MN Regular Night with MWM Special - WISSOTA Midwest Mods, WISSOTA Mod Four, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Doug Koski (WISSOTA Super Stock) | 4th | - | - | 7th |
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| 6/4/2021 | Gondik Law Speedway - Superior, WI Friday Night at the Races WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Doug Koski (WISSOTA Super Stock) | 2nd | - | - | 8th |
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| 6/5/2021 | Hibbing Raceway - Hibbing, MN Autograph Night WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Doug Koski (WISSOTA Super Stock) | 1st | - | - | 3rd |
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| 6/6/2021 | Proctor Speedway - Proctor, MN Weekly Racing presented by St. Germain's Glass WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Doug Koski (WISSOTA Super Stock) | 2nd | - | - | 7th |
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| 6/12/2021 | Hibbing Raceway - Hibbing, MN Kids Rides WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Doug Koski (WISSOTA Super Stock) | DNS | - | - | 11th |
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| 6/13/2021 | Bemidji Speedway - Bemidji, MN Regular Race Hornets, WISSOTA Midwest Mods, WISSOTA Mod Four, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Doug Koski (WISSOTA Super Stock) | 1st | - | - | 6th |
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| 6/19/2021 | Hibbing Raceway - Hibbing, MN Race Of Champions Qualifier WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Doug Koski (WISSOTA Super Stock) | 4th | - | - | 6th |
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| 6/24/2021 | Grand Rapids Speedway - Grand Rapids, MN Meet the Drivers Night WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Doug Koski (WISSOTA Super Stock) | 1st | - | - | 6th |
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| 6/26/2021 | Hibbing Raceway - Hibbing, MN Kids Power Wheel Races WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Doug Koski (WISSOTA Super Stock) | DNS | - | - | 5th |
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| 7/1/2021 | Grand Rapids Speedway - Grand Rapids, MN Salute the Troops Night WISSOTA Midwest Mods, WISSOTA Late Model, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Doug Koski (WISSOTA Super Stock) | 2nd | - | - | 9th |
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| 7/8/2021 | Grand Rapids Speedway - Grand Rapids, MN Thursday Night Thunder Non-Winged Sprints, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Doug Koski (WISSOTA Super Stock) | 2nd | - | - | 3rd |
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| 7/9/2021 | Hibbing Raceway - Hibbing, MN WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Doug Koski (WISSOTA Super Stock) | 5th | - | - | 6th |
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| 7/15/2021 | Grand Rapids Speedway - Grand Rapids, MN Thursday Night Thunder WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Doug Koski (WISSOTA Super Stock) | 3rd | - | - | 3rd |
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| 7/23/2021 | Princeton Speedway - Princeton, MN Superstock Series and hobby stock tour WISSOTA Super Stock: Fast Lane Motorsports Northland Super Stock Series Hobby Stocks, B Modifieds, Sport Compact, WISSOTA Mod Four | Results | | Doug Koski (WISSOTA Super Stock) | 3rd | - | - | 25th (DNF) |
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| 7/24/2021 | Ogilvie Raceway - Ogilvie, MN Saturday Night Shootout with FastLane Motorsports Northland Super Stock Seri WISSOTA Super Stock: Fast Lane Motorsports Northland Super Stock Series WISSOTA Midwest Mods, WISSOTA Mod Four, WISSOTA Modifieds, WISSOTA Street Stock, WISSOTA Hornet | Results | | Doug Koski (WISSOTA Super Stock) | 9th (DNF) | - | DNS | - |
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| 7/30/2021 | Red Cedar Speedway - Menomonie, WI Steffes Street Stock Tour Event Hornets, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Doug Koski (WISSOTA Super Stock) | 3rd | - | - | 4th |
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| 8/14/2021 | Hibbing Raceway - Hibbing, MN Hall of Fame Night Vintage Modifieds: Northern Vintage Stockcar Racers Vintage Full Body Stock Cars, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Doug Koski (WISSOTA Super Stock) | DNS | - | - | 11th |
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| 9/3/2021 | Grand Rapids Speedway - Grand Rapids, MN Structural Buildings WISSOTA Late Model Challenge Series WISSOTA Late Model: Wissota Late Model Challenge Series WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Super Stock | Rain Out |