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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 | | Harry Ruikka (Sport Compact) | 3rd | - | - | 18th (DNF) |
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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 | | Harry Ruikka (Sport Compact) | 7th (DNF) | - | - | 4th |
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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 | | Harry Ruikka (Sport Compact) | 3rd | - | - | 7th |
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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 | | Harry Ruikka (Sport Compact) | 3rd | - | - | 4th |
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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 | | Harry Ruikka (Sport Compact) | 4th | - | - | 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 | | Harry Ruikka (Sport Compact) | 2nd | - | - | 4th |
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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 | | Harry Ruikka (Sport Compact) | 3rd | - | - | 17th (DNF) |
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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 | | Harry Ruikka (Sport Compact) | 6th | - | - | 8th |
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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 | | Harry Ruikka (Sport Compact) | 2nd | - | - | 14th |
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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 | | Harry Ruikka (Sport Compact) | 3rd | - | - | 4th |
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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 | | Harry Ruikka (Sport Compact) | 3rd | - | - | 7th |
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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 | | Harry Ruikka (Sport Compact) | 3rd | - | - | 15th (DNF) |
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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 | | Harry Ruikka (Sport Compact) | 2nd | - | - | 9th |
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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 | | Harry Ruikka (Sport Compact) | 5th | - | - | 3rd |
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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 | | Harry Ruikka (Sport Compact) | 3rd | - | - | 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 | | Harry Ruikka (Sport Compact) | 5th | - | 1st | 16th |
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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 | | Harry Ruikka (Sport Compact) | 3rd | - | - | 21st |
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