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| 4/2/2021 | I-80 Speedway - Greenwood, NE I-80 Speedway - WEST Dirt Super Late Models: SLMR Late Model Series 360 Sprints - Winged, B Modifieds | Results | | Brian Kosiski (Dirt Super Late Models) | 4th | - | - | 2nd |
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| 4/3/2021 | I-80 Speedway - Greenwood, NE I-80 Speedway - WEST Dirt Super Late Models: SLMR Late Model Series 360 Sprints - Winged, A Modifieds | Results | | Brian Kosiski (Dirt Super Late Models) | - | - | - | 6th |
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| 4/13/2021 | I-80 Speedway - Greenwood, NE Tuesday Tickler with Lucas Oil MLRA Dirt Super Late Models: Lucas Oil MLRA A Modifieds, Dirt Late Models | Results | | Brian Kosiski (Dirt Super Late Models) | 6th | - | DNS | - |
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| 4/17/2021 | Hamilton County Speedway - Webster City, IA Malvern Bank $3,000-to-Win Late Models Dirt Super Late Models: SLMR Late Model Series USRA B-Mods, USRA Modifieds, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Brian Kosiski (Dirt Super Late Models) | 3rd | - | 5th | - |
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| 4/30/2021 | Lakeside Speedway - Kansas City, KS Lakeside Speedway - WEST Dirt Super Late Models: SLMR Late Model Series Factory Stocks, Stock Cars, B Modifieds, Mod Lites | Results | | Brian Kosiski (Dirt Super Late Models) | 5th | - | - | 4th |
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| 5/1/2021 | Central Missouri Speedway - Warrensburg, MO Race #3, Seeburg Muffler presents SLMR Special Event and Weekly Racing #3 Dirt Super Late Models: SLMR Late Model Series Hobby Stocks, A Modifieds, B Modifieds, Super Stocks | Results | | Brian Kosiski (Dirt Super Late Models) | 1st | - | - | 13th |
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| 5/7/2021 | Rapid Speedway - Rock Rapids, IA Rapid Speedway - WEST Dirt Super Late Models: SLMR Late Model Series DIRTcar Sportsmans, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars | Results | | Brian Kosiski (Dirt Super Late Models) | 1st | - | - | 8th |
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| 5/15/2021 | Adams County Speedway - Corning, IA Adams County Speedway - WEST Dirt Super Late Models: SLMR Late Model Series Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Sport Compact | Results | | Brian Kosiski (Dirt Super Late Models) | 3rd | - | - | 8th |
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| 5/21/2021 | I-80 Speedway - Greenwood, NE 05/21/2021 Dirt Super Late Models, Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Sport Compact | Results | | Brian Kosiski (Dirt Super Late Models) | 9th | - | 7th | - |
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| 5/22/2021 | Off Road Speedway - Norfolk, NE Rumble at the Ranch - MSTS at Off Road Speedway 360 Sprints - Winged: Midwest Sprint Touring Series Dirt Super Late Models: SLMR Late Model Series Hobby Stocks, Stock Cars, B Modifieds | Results | | Brian Kosiski (Dirt Super Late Models) | 4th | - | - | 12th |
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| 6/12/2021 | Shelby County Speedway - Harlan, IA Shelby County Speedway - WEST Dirt Super Late Models: SLMR Late Model Series Hobby Stocks, Stock Cars, B Modifieds, Non-Winged Sprints | Results | | Brian Kosiski (Dirt Super Late Models) | 5th | - | - | 5th |
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| 6/19/2021 | Hamilton County Speedway - Webster City, IA Malvern Bank SLMR Bill Rice Memorial $3,000-to-Win Late Models Dirt Super Late Models: SLMR Late Model Series USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Brian Kosiski (Dirt Super Late Models) | 4th | - | - | 8th |
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| 7/2/2021 | I-80 Speedway - Greenwood, NE 07/02/2021 Event 360 Sprints - Winged, Dirt Super Late Models, Stock Cars, A Modifieds, Sport Compact | Results | | Brian Kosiski (Dirt Super Late Models) | 1st | - | - | 3rd |
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| 7/11/2021 | Boone County Raceway - Albion, NE Boone County Raceway - WEST Dirt Super Late Models: SLMR Late Model Series Hobby Stocks, Street Stocks | Results | | Brian Kosiski (Dirt Super Late Models) | 5th | - | - | 8th |
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| 7/20/2021 | I-80 Speedway - Greenwood, NE I-80 Nationals Dirt Super Late Models: Lucas Oil Late Model Dirt Series Dirt Late Models, CRUSA Dirt Late Models | Results | | Brian Kosiski (Dirt Super Late Models) | 8th | - | 9th | - |
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| 7/21/2021 | I-80 Speedway - Greenwood, NE I-80 Speedway Silver Dollar Nationals - EAST/WEST Dirt Super Late Models: Lucas Oil Late Model Dirt Series Dirt Late Models, CRUSA Dirt Late Models | Results | | Brian Kosiski (Dirt Super Late Models) | 10th | - | 11th | - |
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| 7/22/2021 | I-80 Speedway - Greenwood, NE Al Belt Custom Homes I-80 Nationals Dirt Super Late Models: Lucas Oil Late Model Dirt Series Stock Cars, CRUSA Dirt Late Models | Results | | Brian Kosiski (Dirt Super Late Models) | - | - | 7th | - |
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| 7/23/2021 | I-80 Speedway - Greenwood, NE Imperial Tile Silver Dollar Nationals Dirt Super Late Models: Lucas Oil Late Model Dirt Series A Modifieds, CRUSA Dirt Late Models, IMCA Modified | Results | | Brian Kosiski (Dirt Super Late Models) | 8th | - | - | - |
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| 7/24/2021 | I-80 Speedway - Greenwood, NE Imperial Tile Silver Dollar Nationals Dirt Super Late Models: Lucas Oil Late Model Dirt Series A Modifieds, CRUSA Dirt Late Models, IMCA Modified | Results | | Brian Kosiski (Dirt Super Late Models) | - | - | 12th | - |
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| 7/30/2021 | Lakeside Speedway - Kansas City, KS Lakeside Speedway - WEST Dirt Super Late Models: SLMR Late Model Series Factory Stocks, Stock Cars, Midwest Modifieds, B Modifieds | Results | | Brian Kosiski (Dirt Super Late Models) | 4th | - | - | 3rd |
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| 8/1/2021 | Stuart Speedway - Stuart, IA Stuart Speedway - WEST Dirt Super Late Models: SLMR Late Model Series Winged A-Class, 600cc Modifieds, Dirt Pro Trucks, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Brian Kosiski (Dirt Super Late Models) | 2nd | - | - | 13th |
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| 8/6/2021 | I-80 Speedway - Greenwood, NE 08/06/2021 Event Dirt Super Late Models, Stock Cars, B Modifieds, Sport Compact | Results | | Brian Kosiski (Dirt Super Late Models) | 2nd | - | - | 5th |
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| 8/7/2021 | Junction Motor Speedway - McCool Junction, NE Junction Motor Speedway - WEST Dirt Super Late Models: SLMR Late Model Series Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, IMCA Late Models, Sport Compact | Results | | Brian Kosiski (Dirt Super Late Models) | 2nd | - | - | 1st |
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| 8/14/2021 | Thayer County Speedway - Deshler, NE Thayer County Speedway - WEST Dirt Super Late Models: SLMR Late Model Series | Results | | Brian Kosiski (Dirt Super Late Models) | 5th | - | - | 9th |
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| 8/28/2021 | Off Road Speedway - Norfolk, NE Off Road Speedway - WEST Dirt Super Late Models: SLMR Late Model Series 360 Sprints - Winged, Hobby Stocks, Stock Cars, B Modifieds | Results | | Brian Kosiski (Dirt Super Late Models) | 3rd | - | - | 15th |
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| 9/4/2021 | 300 Raceway - Farley, IA 300 Raceway - The Yankee - EAST/WEST Dirt Super Late Models: SLMR Late Model Series Stock Cars, A Modifieds, B Modifieds | Results | | Brian Kosiski (Dirt Super Late Models) | 6th | - | 5th | 18th |
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| 9/10/2021 | I-80 Speedway - Greenwood, NE Bobby Parker Memorial 360 Sprints - Winged: ASCS National Dirt Super Late Models | Results | | Brian Kosiski (Dirt Super Late Models) | 1st | - | - | 7th |
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| 9/11/2021 | I-80 Speedway - Greenwood, NE 360 Sprints - Winged: ASCS National Dirt Super Late Models | Results | | Brian Kosiski (Dirt Super Late Models) | 5th | - | - | 9th |
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| 9/18/2021 | Knoxville Raceway - Knoxville, IA 17th Lucas Oil Late Model Knoxville Nationals Dirt Super Late Models: SLMR Late Model Series with Lucas Oil Late Model Dirt Series Dirt Late Models, CRUSA Dirt Late Models | Results | | Brian Kosiski (Dirt Late Models) | 6th | - | - | 12th |
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| 10/1/2021 | I-80 Speedway - Greenwood, NE I-80 Speedway Championship Weekend - EAST/WEST Dirt Super Late Models: SLMR Late Model Series 360 Sprints - Winged | Results | | Brian Kosiski (Dirt Super Late Models) | 7th | - | 1st | 23rd |
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| 10/2/2021 | I-80 Speedway - Greenwood, NE I-80 Speedway Championship Weekend - EAST/WEST Dirt Super Late Models: SLMR Late Model Series 360 Sprints - Winged, Dirt Late Models | Results | | Brian Kosiski (Dirt Super Late Models) | 2nd | - | - | 21st |
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| 12/19/2021 | I-80 Speedway - Greenwood, NE Point Fund 2021 Dirt Super Late Models: SLMR Late Model Series | Results | | Brian Kosiski (Dirt Super Late Models) | - | - | - | - |
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