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| 5/23/2020 | Cedar Lake Speedway - New Richmond, WI Pack The Track Night and Cook Memorial FREE GRANDSTAND ENTRY! Limited Sprints - Winged: UMSS Winged Sprint Car Series 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series Midwest Modifieds, Winged A-Class, Pony Stock, Super Stocks, USRA Late Models | Results | | Karl Leavenworth (Super Stocks) | 6th | - | 1st | 20th |
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| 5/30/2020 | Rice Lake Speedway - Rice Lake, WI 68th Season Opener: Five Class program Best Appearing Car Judging WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Karl Leavenworth (WISSOTA Super Stock) | 4th | - | - | 14th (DNF) |
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| 6/12/2020 | Eagle Valley Speedway - Jim Falls, WI Friday Night WISSOTA Auto Racing Hornets, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Karl Leavenworth (WISSOTA Super Stock) | 5th | - | - | 6th |
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| 6/19/2020 | Eagle Valley Speedway - Jim Falls, WI Kids Night - Friday Night WISSOTA Auto Racing Hornets, USRA Modifieds, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Karl Leavenworth (WISSOTA Super Stock) | 3rd | - | - | 9th |
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| 7/11/2020 | North Central Speedway - Brainerd, MN Weekly Races Hobby Stocks, A Modifieds, Winged A-Class, B Modifieds, 360 Sprints - Non-Winged, Sport Compact, WISSOTA Mod Four, WISSOTA Super Stock | Results | | Karl Leavenworth (WISSOTA Super Stock) | 4th | - | - | 11th (DNF) |
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| 7/17/2020 | Princeton Speedway - Princeton, MN FastLane Super Stock Series WISSOTA Super Stock: Fast Lane Motorsports Northland Super Stock Series Hobby Stocks, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four | Results | | Karl Leavenworth (WISSOTA Super Stock) | 7th (DNF) | - | 5th | - |
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| 7/23/2020 | Grand Rapids Speedway - Grand Rapids, MN Fast Lane Northland Super Stock Series WISSOTA Super Stock: Fast Lane Motorsports Northland Super Stock Series Non-Winged Sprints, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Hornet | Results | | Karl Leavenworth (WISSOTA Super Stock) | 3rd | - | - | 12th |
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| 7/24/2020 | Gondik Law Speedway - Superior, WI Fair Week-Night #2/Fast Lane Motorsports Northland Super Stock Series WISSOTA Super Stock: Fast Lane Motorsports Northland Super Stock Series WISSOTA Midwest Mods, WISSOTA Pure Stock, WISSOTA Hornet | Results | | Karl Leavenworth (WISSOTA Super Stock) | 6th | - | 12th | - |
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| 8/1/2020 | Ogilvie Raceway - Ogilvie, MN Saturday Night Shootout Fast Lane Super Stock Series WISSOTA Super Stock: Fast Lane Motorsports Northland Super Stock Series WISSOTA Mod Four, WISSOTA Modifieds, WISSOTA Street Stock, WISSOTA Hornet | Results | | Karl Leavenworth (WISSOTA Super Stock) | 5th | - | 2nd | 14th |
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| 9/4/2020 | Grand Rapids Speedway - Grand Rapids, MN Structural Buildings WISSOTA Late Model Challenge Series USRA Modifieds, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Pure Stock, WISSOTA Super Stock | Results | | Karl Leavenworth (WISSOTA Super Stock) | 3rd | - | - | 3rd |
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| 9/5/2020 | Hibbing Speedway - Hibbing, MN Structural Buildings WISSOTA Late Model Challenge Series WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Karl Leavenworth (WISSOTA Super Stock) | 6th | - | - | - |
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| 9/6/2020 | Hibbing Speedway - Hibbing, MN Structural Buildings WISSOTA Late Model Challenge Series WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Karl Leavenworth (WISSOTA Super Stock) | 6th | - | - | 15th |
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| 9/17/2020 | I-94 Speedway - Fergus Falls, MN The Dick Johanneck King of Dirt Special Hornets, Economy Late Models, USRA Modifieds, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Karl Leavenworth (WISSOTA Super Stock) | 10th | - | - | - |
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| 9/18/2020 | I-94 Speedway - Fergus Falls, MN The Dick Johanneck King of Dirt Special Hornets, Economy Late Models, USRA Modifieds, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Karl Leavenworth (WISSOTA Super Stock) | 7th | - | - | - |
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| 9/19/2020 | I-94 Speedway - Fergus Falls, MN The Dick Johanneck King of Dirt Special Hornets, Economy Late Models, USRA Modifieds, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Karl Leavenworth (WISSOTA Super Stock) | - | - | 3rd | 12th |
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