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| 7/20/2018 | Hawkeye Downs Speedway - Cedar Rapids, IA Asphalt Late Models, Hobby Stocks, Sportsmans, Masters Legends, Vintage Full Body Stock Cars, Hornets | Results | | Robb Koster (Vintage Full Body Stock Cars) | 5th | - | - | 9th |
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| 8/10/2018 | Hawkeye Downs Speedway - Cedar Rapids, IA Asphalt Late Models, Hobby Stocks, Sportsmans, Masters Legends, Vintage Full Body Stock Cars, Hornets | Results | | Robb Koster (Vintage Full Body Stock Cars) | 6th | - | - | 12th |
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| 8/12/2018 | Dubuque Fairgrounds Speedway - Dubuque, IA Back to School Weekly Racing w/ AIRS A Modifieds, B Modifieds, Dirt Late Models, Masters Legends, Economy Late Models | Results | | Robb Koster (Masters Legends) | 5th | - | - | 11th |
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| 9/29/2018 | Dubuque Fairgrounds Speedway - Dubuque, IA Pepsi Rumble on the River A Modifieds, B Modifieds, Masters Legends, Economy Late Models | Results | | Robb Koster (Masters Legends) | 4th | - | - | - |
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