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| 3/24/2021 | Humboldt Speedway - Humboldt, KS KOA and Battle Practice A Modifieds: USMTS - United States Modified Touring Series B Modifieds, USRA B-Mods, USRA Modifieds, USRA Stock Cars | Results | | Jeff Spacek (A Modifieds) | - | - | - | - |
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| 3/26/2021 | Humboldt Speedway - Humboldt, KS King Of America $5,000 to win + Battle Qualifying A Modifieds: USMTS - United States Modified Touring Series B Modifieds, USRA B-Mods, USRA Stock Cars | Results | | Jeff Spacek (A Modifieds) | 10th | - | 10th | - |
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| 3/27/2021 | Humboldt Speedway - Humboldt, KS King Of America $20,000 to win, Battle at the Bullring $10,00 to win A Modifieds: USMTS - United States Modified Touring Series B Modifieds, USRA B-Mods, USRA Modifieds, USRA Stock Cars | Results | | Jeff Spacek (A Modifieds) | 5th | - | 18th | - |
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| 5/1/2021 | Rice Lake Speedway - Rice Lake, WI 69th Season Opener, 5 Class Program, Best Appearing Car Judging, Five Class Program WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Jeff Spacek (WISSOTA Modifieds) | 7th (DNF) | - | - | 3rd |
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| 5/8/2021 | Rice Lake Speedway - Rice Lake, WI Five Class Program WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Jeff Spacek (WISSOTA Modifieds) | 2nd | - | - | 4th |
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| 5/15/2021 | Rice Lake Speedway - Rice Lake, WI WISSOTA Late Models Trackside Collectibles 40 plus 5 Class program WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Pure Stock, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Jeff Spacek (WISSOTA Modifieds) | 8th (DNF) | - | - | 6th |
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| 5/29/2021 | ABC Raceway - Ashland, WI Ashland Ford Chrysler Weekend Deal presented by the Lakeshore Cafe & Zielies Tree Service A Modifieds, Dirt 6-cyl Stock Cars, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Jeff Spacek (WISSOTA Modifieds) | 2nd | - | - | 3rd |
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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 | | Jeff Spacek (WISSOTA Modifieds) | 7th | - | - | 12th |
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| 6/5/2021 | ABC Raceway - Ashland, WI Little Caesar's Pizza Meet the Driver's Night Dirt 6-cyl Stock Cars, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Jeff Spacek (WISSOTA Modifieds) | 6th (DNF) | - | - | 7th |
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| 6/12/2021 | ABC Raceway - Ashland, WI RV Mod Series Presented by NAPA Auto of Ashland & Washburn A Modifieds, Dirt 6-cyl Stock Cars, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Hornet | Results | | Jeff Spacek (WISSOTA Modifieds) | 3rd | - | - | 24th (DNF) |
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| 6/19/2021 | ABC Raceway - Ashland, WI Ashland Area Chamber of Commerce AFCO Race of Champions Dirt 6-cyl Stock Cars, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Jeff Spacek (WISSOTA Modifieds) | 3rd | - | - | 2nd |
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| 6/26/2021 | ABC Raceway - Ashland, WI Heartland Communications Night with the Northern Renegade Sprints 360 Sprints - Non-Winged, Dirt 6-cyl Stock Cars, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Jeff Spacek (WISSOTA Modifieds) | 4th | - | - | 11th |
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| 7/2/2021 | Gondik Law Speedway - Superior, WI 5th Annual Great Lakes Border Battle-Night #1 WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Jeff Spacek (WISSOTA Modifieds) | 7th | - | 4th | 14th |
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| 7/3/2021 | Gondik Law Speedway - Superior, WI 5th Annual Great Lakes Border Battle-Night #2 WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Jeff Spacek (WISSOTA Modifieds) | 4th | - | - | 7th |
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| 7/10/2021 | ABC Raceway - Ashland, WI Kid's Bike Races presented by Chicago Iron & Supplies Dirt 6-cyl Stock Cars, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Jeff Spacek (WISSOTA Modifieds) | 1st | - | - | 2nd |
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| 7/16/2021 | Ogilvie Raceway - Ogilvie, MN Inaugural USMTS Mod Wars A Modifieds: USMTS - United States Modified Touring Series WISSOTA Midwest Mods, WISSOTA Mod Four, WISSOTA Hornet | Results | | Jeff Spacek (A Modifieds) | 8th | - | 9th | - |
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| 7/17/2021 | Ogilvie Raceway - Ogilvie, MN Inaugural USMTS Mod Wars A Modifieds: USMTS - United States Modified Touring Series WISSOTA Midwest Mods, WISSOTA Mod Four, WISSOTA Hornet | Results | | Jeff Spacek (A Modifieds) | 8th | - | 14th | - |
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| 7/24/2021 | ABC Raceway - Ashland, WI Northern Clearing Inc Racing for a Reason with the Northern Renegade Sprints 360 Sprints - Non-Winged, Dirt 6-cyl Stock Cars, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Hornet | Results | | Jeff Spacek (WISSOTA Modifieds) | 1st | - | - | 3rd |
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| 7/29/2021 | ABC Raceway - Ashland, WI 444 Memorial For Tanner Byholm WISSOTA Late Model: Wissota Late Model Challenge Series A Modifieds, WISSOTA Midwest Mods, WISSOTA Modifieds | Results | | Jeff Spacek (WISSOTA Modifieds) | 5th | - | - | 24th (DNF) |
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| 8/21/2021 | ABC Raceway - Ashland, WI Safari Bar Hornet's Nest 25 presented by the ABC Sportsmen Club Dirt 6-cyl Stock Cars, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Street Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Jeff Spacek (WISSOTA Modifieds) | 3rd | - | - | 4th |
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| 9/2/2021 | Proctor Speedway - Proctor, MN Structural Buildings WISSOTA Late Model Challenge Series WISSOTA Late Model: Wissota Late Model Challenge Series WISSOTA Modifieds | Results | | Jeff Spacek (WISSOTA Modifieds) | 8th | - | 4th | - |
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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 |
| 9/4/2021 | Hibbing Raceway - Hibbing, 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, WISSOTA Hornet | Results | | Jeff Spacek (WISSOTA Modifieds) | 4th | - | - | 21st (DNF) |
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| 9/5/2021 | Hibbing Raceway - Hibbing, MN Structural Buildings WISSOTA Late Model Challenge Series - Championship Night WISSOTA Late Model: Wissota Late Model Challenge Series WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Jeff Spacek (WISSOTA Modifieds) | 10th | - | DNS | - |
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| 9/10/2021 | Gondik Law Speedway - Superior, WI Northern Nationals-Night #2 WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Super Stock | Results | | Jeff Spacek (WISSOTA Modifieds) | 3rd | - | - | 14th |
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| 9/11/2021 | Gondik Law Speedway - Superior, WI Northern Nationals-Night #3 WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Super Stock | Results | | Jeff Spacek (WISSOTA Modifieds) | 3rd | - | - | 7th |
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| 9/24/2021 | Deer Creek Speedway - Spring Valley, MN 23rd Annual Featherlite Fall Jamboree A Modifieds: USMTS - United States Modified Touring Series USRA B-Mods | Results | | Jeff Spacek (A Modifieds) | 12th | - | 18th | - |
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| 9/25/2021 | Deer Creek Speedway - Spring Valley, MN 23rd Annual Featherlite Fall Jamboree A Modifieds: USMTS - United States Modified Touring Series USRA B-Mods | Results | | Jeff Spacek (A Modifieds) | 10th | - | 18th | - |
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| 10/1/2021 | ABC Raceway - Ashland, WI Red Clay Classic A Modifieds, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Super Stock | Results | | Jeff Spacek (WISSOTA Modifieds) | 10th (DNF) | - | 11th (DNF) | - |
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