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| 6/1/2018 | Hancock County Speedway - Britt, IA Weekly Racing Series presented by Farmers Trust & Savings Bank & KIOW Radio Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Sport Compact | Results | | Jeff Dolphin (Stock Cars) | 5th | - | - | 9th |
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| 6/15/2018 | Hancock County Speedway - Britt, IA Weekly Racing Series presented by Brad Hiscocks & Hancock County Snowmobile Association Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, 600cc Modifieds, Sport Compact | Results | | Jeff Dolphin (Stock Cars) | 1st | - | - | 4th |
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| 7/6/2018 | Hancock County Speedway - Britt, IA Hobby Stock Showdown w/ Weekly Racing Series presented by Rachel Johnson & Albrant Racing Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Sport Compact | Results | | Jeff Dolphin (Stock Cars) | 2nd | - | - | 7th |
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| 7/10/2018 | Hancock County Speedway - Britt, IA MaxYield SEED Northern Sport Mod Nationals Hobby Stocks, Stock Cars, A Modifieds, B Modifieds | Results | | Jeff Dolphin (Stock Cars) | 1st | - | - | 6th |
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| 7/24/2018 | Hancock County Speedway - Britt, IA Dirt Knights Tour Presented by the Hancock County District Fair Hobby Stocks, Stock Cars, A Modifieds, B Modifieds | Results | | Jeff Dolphin (Stock Cars) | 2nd | - | - | 8th |
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| 7/27/2018 | Hancock County Speedway - Britt, IA Hobo 100 @ the Hancock County Fair presented by McNeese Tire & Communications 1 Network Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Sport Compact | Results | | Jeff Dolphin (Stock Cars) | 6th | - | 9th | - |
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| 8/3/2018 | Hancock County Speedway - Britt, IA Season Championship presented by Zero1 Shocks & Suspension & Elite Seamless Gutter Systems Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, 600cc Modifieds, Sport Compact | Results | | Jeff Dolphin (Stock Cars) | - | - | - | 5th |
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| 8/9/2018 | Hancock County Speedway - Britt, IA Night of 1000 Stars presented by Doug Studer Farms & Brakke Imp. Hobby Stocks, Stock Cars, A Modifieds, B Modifieds | Results | | Jeff Dolphin (Stock Cars) | 4th | - | - | 10th (DNF) |
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| 8/10/2018 | Hancock County Speedway - Britt, IA Night of 10,000 Stars Hobby Stocks, Stock Cars, A Modifieds, B Modifieds | Results | | Jeff Dolphin (Stock Cars) | 2nd | - | - | 12th |
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| 8/11/2018 | Hancock County Speedway - Britt, IA Bob Shryock Memorial All Stars presented by Lake Mills Motor Sports Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, 600cc Modifieds | Results | | Jeff Dolphin (Stock Cars) | 3rd | - | - | 9th |
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| 8/18/2018 | Hancock County Speedway - Britt, IA Pritchard Family Auto Stores 100 Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, 600cc Modifieds, Sport Compact | Results | | Jeff Dolphin (Stock Cars) | 3rd | - | - | 4th |
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