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| 5/5/2018 | Winfield Speedway - Winfield, KS Ozark Kart Series Race #2 Junior Class, Junior 1 Heavy Dirt Karts, Junior 2 Heavy Dirt Karts, Adult Open, Adult Heavy, Rookie Class, Flat Adult Clone, Clone Heavy Dirt Karts, Clone Medium Dirt Karts, Clone Lite Dirt Karts, Clone Super Heavy Dirt Karts, Flat Jr. 1 Clone Heavy, Flat Jr. 2 Clone Heavy, Flat Jr. 1 Clone | Results | | Jeff Cox (Adult Open) | - | - | - | 6th | | Jeff Cox (Clone Heavy Dirt Karts) | 1st | - | - | 7th | | Jeff Cox (Clone Medium Dirt Karts) | 3rd | - | - | 3rd |
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| 6/2/2018 | 59 Speedway - Sallisaw, OK Ozark Kart Series Race #1 Makeup Junior Class, Junior 1 Heavy Dirt Karts, Junior 2 Heavy Dirt Karts, Adult Open, Adult Heavy, Rookie Class, Flat Adult Clone, Clone Heavy Dirt Karts, Clone Medium Dirt Karts, Clone Lite Dirt Karts, Clone Super Heavy Dirt Karts, Flat Jr. 1 Clone Heavy, Flat Jr. 2 Clone Heavy, Flat Jr. 1 Clone | Results | | Jeff Cox (Adult Open) | - | - | - | - | | Jeff Cox (Clone Heavy Dirt Karts) | 6th | - | - | 11th | | Jeff Cox (Clone Medium Dirt Karts) | 3rd | - | - | 8th |
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| 6/9/2018 | WaKeeney Speedway - Wakeeney, KS Ozark Kart Series Race #3 Junior Class, Junior 1 Heavy Dirt Karts, Junior 2 Heavy Dirt Karts, Adult Open, Adult Heavy, Rookie Class, Flat Adult Clone, Clone Heavy Dirt Karts, Clone Medium Dirt Karts, Clone Lite Dirt Karts, Clone Super Heavy Dirt Karts, Flat Jr. 1 Clone Heavy, Flat Jr. 2 Clone Heavy, Flat Jr. 1 Clone | Results | | Jeff Cox (Adult Open) | - | - | - | - | | Jeff Cox (Clone Heavy Dirt Karts) | 4th | - | - | 9th | | Jeff Cox (Clone Medium Dirt Karts) | 3rd | - | - | 5th |
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| 7/7/2018 | Winfield Speedway - Winfield, KS Ozark Kart Series Race #4 Junior Class, Junior 1 Heavy Dirt Karts, Junior 2 Heavy Dirt Karts, Adult Open, Adult Heavy, Rookie Class, Flat Adult Clone, Flat RWYB, Clone Heavy Dirt Karts, Clone Medium Dirt Karts, Clone Lite Dirt Karts, Clone Super Heavy Dirt Karts, Flat Jr. 1 Clone Heavy, Flat Jr. 2 Clone Heavy, Flat Jr. 1 Clone | Results | | Jeff Cox (Adult Open) | - | - | - | - | | Jeff Cox (Clone Heavy Dirt Karts) | 4th | - | - | 9th | | Jeff Cox (Clone Medium Dirt Karts) | 3rd | - | - | 4th |
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| 8/11/2018 | Worden Park Speedway - Wellington, KS Ozark Kart Series Race #5 Junior Class, Junior 1 Heavy Dirt Karts, Junior 2 Heavy Dirt Karts, Adult Open, Adult Heavy, Rookie Class, Flat Adult Clone, Clone Heavy Dirt Karts, Clone Medium Dirt Karts, Clone Lite Dirt Karts, Clone Super Heavy Dirt Karts, Flat Jr. 1 Clone Heavy, Flat Jr. 2 Clone Heavy, Flat Jr. 1 Clone | Results | | Jeff Cox (Clone Heavy Dirt Karts) | 4th | - | - | 7th | | Jeff Cox (Clone Medium Dirt Karts) | 4th | - | - | 3rd |
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| 9/29/2018 | Winfield Speedway - Winfield, KS Ozark Kart Series/ Del Lamb Memorial Junior Class, Junior 1 Heavy Dirt Karts, Junior 2 Heavy Dirt Karts, Adult Open, Junior Open, Adult Heavy, Rookie Class, Flat Adult Clone, Flat RWYB, Clone Heavy Dirt Karts, Clone Medium Dirt Karts, Clone Lite Dirt Karts, Clone Super Heavy Dirt Karts, Open Dirt Karts, Flat Jr. 1 Clone Heavy, Flat Jr. 2 Clone Heavy, Flat Jr. 1 Clone | Results | | Jeff Cox (Adult Open) | 7th | - | - | 10th | | Jeff Cox (Clone Heavy Dirt Karts) | 4th | - | - | 9th | | Jeff Cox (Clone Medium Dirt Karts) | 3rd (DNF) | - | - | 3rd |
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