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| 4/16/2021 | Princeton Speedway - Princeton, MN Season Opener Hobby Stocks, A Modifieds, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | David Siercks (B Modifieds) | 4th (DNF) | - | - | DNS |
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| 4/17/2021 | North Central Speedway - Brainerd, MN Season Opener Hobby Stocks, A Modifieds, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | David Siercks (B Modifieds) | 1st | - | - | 13th (DNF) |
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| 4/30/2021 | Princeton Speedway - Princeton, MN Hobby Stocks, A Modifieds, Winged A-Class, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | David Siercks (B Modifieds) | 1st | - | - | 14th |
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| 5/1/2021 | North Central Speedway - Brainerd, MN Ron Johnson memorial race Hobby Stocks, A Modifieds, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | David Siercks (B Modifieds) | 3rd | - | - | 23rd |
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| 5/8/2021 | North Central Speedway - Brainerd, MN Hobby Stocks, A Modifieds, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | David Siercks (B Modifieds) | 1st | - | - | 5th |
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| 5/14/2021 | Princeton Speedway - Princeton, MN Meet the drivers night (kids Night) Hobby Stocks, A Modifieds, Winged A-Class, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | David Siercks (B Modifieds) | 1st | - | - | 1st |
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| 5/15/2021 | North Central Speedway - Brainerd, MN Hobby Stocks, A Modifieds, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | David Siercks (B Modifieds) | 1st | - | - | 1st |
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| 5/21/2021 | Princeton Speedway - Princeton, MN Hobby Stocks, A Modifieds, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | David Siercks (B Modifieds) | 2nd | - | - | 6th |
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| 5/22/2021 | North Central Speedway - Brainerd, MN Meet the drivers Hobby Stocks, A Modifieds, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | David Siercks (B Modifieds) | 1st | - | - | 4th |
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| 5/29/2021 | North Central Speedway - Brainerd, MN Weekly racing Hobby Stocks, A Modifieds, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | David Siercks (B Modifieds) | 1st | - | - | 5th |
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| 6/4/2021 | Princeton Speedway - Princeton, MN Hobby Stocks, A Modifieds, Winged A-Class, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | David Siercks (B Modifieds) | 3rd | - | - | 6th |
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| 6/5/2021 | North Central Speedway - Brainerd, MN Hobby Stocks, A Modifieds, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | David Siercks (B Modifieds) | 1st | - | - | 6th |
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| 6/11/2021 | Princeton Speedway - Princeton, MN Hobby Stocks, A Modifieds, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | David Siercks (B Modifieds) | 1st | - | - | 2nd |
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| 6/12/2021 | North Central Speedway - Brainerd, MN Hobby Stocks, A Modifieds, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | David Siercks (B Modifieds) | 2nd | - | - | 3rd |
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| 6/18/2021 | Princeton Speedway - Princeton, MN Hobby Stocks, A Modifieds, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | David Siercks (B Modifieds) | 3rd | - | - | 2nd |
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| 6/19/2021 | North Central Speedway - Brainerd, MN Hobby Stocks, A Modifieds, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | David Siercks (B Modifieds) | 4th | - | - | 2nd |
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| 6/24/2021 | Princeton Speedway - Princeton, MN Siercks Memorial Hobby Stocks, A Modifieds, B Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | David Siercks (IMCA Northern SportMod) | 3rd | - | - | 16th (DNF) |
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| 6/25/2021 | North Central Speedway - Brainerd, MN 10000 lakes 10k A Modifieds, B Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | David Siercks (IMCA Northern SportMod) | 3rd | - | - | 15th |
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| 6/26/2021 | North Central Speedway - Brainerd, MN 10000 lakes 10k IMCA Modified: Land of Ten Thousand Lakes 10K A Modifieds, B Modifieds, IMCA Northern SportMod, IMCA Stock Car | Results | | David Siercks (IMCA Northern SportMod) | 1st | - | - | 14th (DNF) |
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| 6/27/2021 | Granite City Motor Park - Sauk Rapids, MN IMCA - $10K to Win! IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | David Siercks (IMCA Northern SportMod) | 1st | - | - | 4th |
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| 7/9/2021 | Princeton Speedway - Princeton, MN Weekly races Vintage Modifieds: Northern Vintage Stockcar Racers Hobby Stocks, A Modifieds, B Modifieds, Vintage Full Body Stock Cars, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | David Siercks (B Modifieds) | 3rd | - | - | 3rd |
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| 7/10/2021 | North Central Speedway - Brainerd, MN Vintage Modifieds: Northern Vintage Stockcar Racers Hobby Stocks, A Modifieds, B Modifieds, Vintage Full Body Stock Cars, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | David Siercks (B Modifieds) | 1st | - | - | 2nd |
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| 7/16/2021 | Princeton Speedway - Princeton, MN Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Super Stock | Results | | David Siercks (B Modifieds) | 7th | - | - | 2nd |
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| 7/17/2021 | North Central Speedway - Brainerd, MN Weekly races Hobby Stocks, A Modifieds, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four | Results | | David Siercks (B Modifieds) | 5th | - | - | 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 | | David Siercks (B Modifieds) | 1st | - | - | 13th (DNF) |
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| 7/24/2021 | North Central Speedway - Brainerd, MN Hobby stock tour Hobby Stocks, A Modifieds, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four | Results | | David Siercks (B Modifieds) | 6th | - | - | 1st |
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| 7/30/2021 | Princeton Speedway - Princeton, MN Hobby Stocks, A Modifieds, Winged A-Class, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four | Results | | David Siercks (B Modifieds) | 4th | - | - | 12th |
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| 7/31/2021 | North Central Speedway - Brainerd, MN Hobby Stocks, A Modifieds, Winged A-Class, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four | Results | | David Siercks (B Modifieds) | 3rd | - | - | 4th |
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| 8/3/2021 | Deer Creek Speedway - Spring Valley, MN 2021 IMCA Harris Clash IMCA Modified, IMCA Northern SportMod | Results | | David Siercks (IMCA Northern SportMod) | 7th | - | 8th | - |
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| 8/6/2021 | Princeton Speedway - Princeton, MN Hobby Stocks, A Modifieds, Winged A-Class, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | David Siercks (B Modifieds) | 1st | - | - | 1st |
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| 8/13/2021 | Princeton Speedway - Princeton, MN Hobby Stocks, A Modifieds, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | David Siercks (B Modifieds) | 1st | - | - | 3rd |
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| 8/14/2021 | North Central Speedway - Brainerd, MN Bud Jones and sons night Hobby Stocks, A Modifieds, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | David Siercks (B Modifieds) | 2nd | - | - | 8th |
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| 8/15/2021 | Buffalo River Speedway - Glyndon, MN August 15th 2021 POWRi MINN-KOTA LIGHTNING SPRINT SHOOTOUT Lightning Sprints: POWRi Minn-Kota Lightning Sprints Midgets, Dirt Late Models, Sport Compact, IMCA Northern SportMod, IMCA Hobby Stock | Results | | David Siercks (IMCA Northern SportMod) | 6th | - | - | 6th |
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| 8/21/2021 | North Central Speedway - Brainerd, MN Weekly races Vintage Modifieds: Northern Vintage Stockcar Racers Hobby Stocks, A Modifieds, B Modifieds, Vintage Full Body Stock Cars, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | David Siercks (B Modifieds) | 3rd | - | - | 3rd |
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| 8/22/2021 | Buffalo River Speedway - Glyndon, MN August 22nd 2021 Dirt Late Models, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Hobby Stock | Results | | David Siercks (IMCA Northern SportMod) | 4th | - | - | 5th |
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| 9/4/2021 | North Central Speedway - Brainerd, MN Mighty Axe Hobby Stocks, A Modifieds, Winged A-Class, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | David Siercks (B Modifieds) | 5th | - | 2nd | 24th (DNF) |
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| 9/5/2021 | North Central Speedway - Brainerd, MN Mighty Axe night 2 Hobby Stocks, A Modifieds, Winged A-Class, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | David Siercks (B Modifieds) | 1st | - | - | 5th |
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| 9/24/2021 | Jamestown Speedway - Jamestown, ND 50th Annual Jamestown Stock Car Stampede B Modifieds, Semi-Pro Legends, Pure Stock, IMCA Modified, IMCA Northern SportMod, WISSOTA Midwest Mods, WISSOTA Late Model, WISSOTA Street Stock, Junior Slingshots | Results | | David Siercks (IMCA Northern SportMod) | 1st | - | - | 7th |
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| 9/25/2021 | Jamestown Speedway - Jamestown, ND 50th Annual Jamestown Stock Car Stampede B Modifieds, Semi-Pro Legends, Pure Stock, IMCA Modified, IMCA Northern SportMod, WISSOTA Midwest Mods, WISSOTA Late Model, WISSOTA Street Stock, Junior Slingshots | Results | | David Siercks (IMCA Northern SportMod) | 4th | - | - | 6th |
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| 10/22/2021 | Ogilvie Raceway - Ogilvie, MN Topless Nationals Night One A Modifieds, B Modifieds, Street Stocks, Dirt 4 cyl Modifieds, Super Stocks | Results | | David Siercks (B Modifieds) | 4th | - | - | - |
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| 10/23/2021 | Ogilvie Raceway - Ogilvie, MN Topless Nationals Night Two A Modifieds, Winged A-Class, B Modifieds, Street Stocks, Dirt 4 cyl Modifieds, Super Stocks | Results | | David Siercks (B Modifieds) | - | - | 2nd | 24th (DNF) |
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