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| 8/14/2021 | 141 Speedway - Maribel, WI Mechanics Races / Triple Creek Series $1,000.00 to Win Stock Cars / CC #14 Stock Cars, Sportsmans, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | Jim Wirtz (Stock Cars) | 6th | - | - | 19th |
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| 8/19/2021 | 141 Speedway - Maribel, WI Captain of the Creek III $10,000.00 to Win IMCA Northern SportMods Stock Cars, IMCA Northern SportMod, IMCA Stock Car | Results | | Jim Wirtz (Stock Cars) | DNS | - | - | DNS |
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| 9/5/2021 | 141 Speedway - Maribel, WI Sunday Funday - IRA Bumper to Bumper Sprint Cars with Grand Nationals, Street Stocks and Legends 410 Sprints - Winged: IRA Interstate Racing Association Stock Cars, Sportsmans | Results | | Jim Wirtz (Stock Cars) | 6th | - | - | 15th |
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| 9/25/2021 | 141 Speedway - Maribel, WI 12th Annual Treek Strong Creek Classic Stock Cars, Sportsmans, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | Jim Wirtz (Stock Cars) | 2nd | - | - | 15th |
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