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| 5/5/2018 | Miller Central Speedway - Miller, SD Season Opener- Quoin Financial Bank Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Curtis Johnson (Pure Stock) | 3rd | - | - | 4th |
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| 5/19/2018 | Miller Central Speedway - Miller, SD Miller Central Speedway Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Curtis Johnson (Pure Stock) | 5th | - | - | 2nd |
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| 5/25/2018 | Miller Central Speedway - Miller, SD Miller Central Speedway Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Curtis Johnson (Pure Stock) | 3rd | - | - | 2nd |
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| 5/26/2018 | Miller Central Speedway - Miller, SD Miller Central Speedway Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Curtis Johnson (Pure Stock) | 1st | - | - | 4th |
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| 6/9/2018 | Miller Central Speedway - Miller, SD Miller Central Speedway-ROC Race Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Curtis Johnson (Pure Stock) | 2nd | - | - | 4th |
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| 6/16/2018 | Miller Central Speedway - Miller, SD Miller Central Speedway Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Rain Out |
| 7/7/2018 | Miller Central Speedway - Miller, SD Miller Central Speedway Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Curtis Johnson (Pure Stock) | 1st | - | - | 3rd |
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| 7/14/2018 | Miller Central Speedway - Miller, SD Miller Central Speedway Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Curtis Johnson (Pure Stock) | 3rd | - | - | 1st |
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| 7/28/2018 | Miller Central Speedway - Miller, SD Miller Central Speedway Special A Modifieds, Pure Stock, WISSOTA Midwest Mods, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Curtis Johnson (Pure Stock) | 3rd | - | - | 3rd |
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| 8/11/2018 | Miller Central Speedway - Miller, SD Miller Central Speedway Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Curtis Johnson (Pure Stock) | 2nd | - | - | 2nd |
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| 8/17/2018 | Miller Central Speedway - Miller, SD Miller Central Speedway Two Day Special Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Curtis Johnson (Pure Stock) | 4th | - | - | 5th |
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| 8/18/2018 | Miller Central Speedway - Miller, SD Miller Central Speedway Two Day Special & Track Championship Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Curtis Johnson (Pure Stock) | 4th | - | - | 3rd |
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| 8/25/2018 | Miller Central Speedway - Miller, SD Miller Central Speedway 4th Annual Big Dog Race Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Curtis Johnson (Pure Stock) | 4th | - | - | 2nd |
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| 9/1/2018 | Miller Central Speedway - Miller, SD Miller Central Speedway Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Curtis Johnson (Pure Stock) | 3rd (DNF) | - | - | 3rd |
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| 9/8/2018 | Miller Central Speedway - Miller, SD Miller Central Speedway Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Curtis Johnson (Pure Stock) | 2nd | - | - | 2nd |
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