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| 5/12/2018 | Thunder Hill Speedway - Menomonie, WI Cedar Country Co-op Night Junior Class, Junior 1 Lites Dirt Karts, Junior 2 Lites Dirt Karts, Adult Heavy, Adult Medium, Rookie Class, 250 Winged Outlaw, 500 Winged Open Outlaw, Junior Sportsman Dirt Karts, Cage Jr. 206 A | Results | | Mason Seubert (Junior Sportsman Dirt Karts) | 3rd | - | - | 4th |
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| 6/9/2018 | Thunder Hill Speedway - Menomonie, WI Red Cedar Speedway Night Junior Class, Junior 1 Lites Dirt Karts, Junior 2 Lites Dirt Karts, Adult Heavy, Adult Medium, Rookie Class, 250 Winged Outlaw, 500 Winged Open Outlaw, Junior Sportsman Dirt Karts, Cage Jr. 206 A | Results | | Mason Seubert (Junior Sportsman Dirt Karts) | 7th | - | - | 12th |
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| 6/15/2018 | English Creek Speedway - Knoxville, IA Winged Outlaw, Adult Medium, Restricted Box Stock, Unrestricted Box Stock, 250 Winged Outlaw Heavy, 500 Winged Open Outlaw, Clone Heavy Dirt Karts | Results | | Mason Seubert (250 Winged Outlaw Heavy) | 4th | - | - | 1st |
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| 6/16/2018 | Thunder Hill Speedway - Menomonie, WI Liquid Nitro / DLSWorldwide.com Night Junior Class, Junior 1 Lites Dirt Karts, Junior 2 Lites Dirt Karts, Adult Heavy, Adult Medium, Rookie Class, 600cc Modifieds, 250 Winged Outlaw, 500 Winged Open Outlaw, Junior Sportsman Dirt Karts, Cage Jr. 206 A | Results | | Mason Seubert (Junior Sportsman Dirt Karts) | 2nd | - | - | 7th |
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| 6/23/2018 | Thunder Hill Speedway - Menomonie, WI Otter Acres Plaques and Trophies Night Junior Class, Junior 1 Lites Dirt Karts, Junior 2 Lites Dirt Karts, Adult Heavy, Adult Medium, Rookie Class, 250 Winged Outlaw, 500 Winged Open Outlaw, Junior Sportsman Dirt Karts, Cage Jr. 206 A | Results | | Mason Seubert (Junior Sportsman Dirt Karts) | 1st | - | - | 2nd |
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| 6/30/2018 | Thunder Hill Speedway - Menomonie, WI SUMMER THUNDER! J & K Concrete / T & K Fireworks Night (Saturday)- HUGE FIREWORKS SHOW!!! Junior Class, Junior 1 Lites Dirt Karts, Junior 2 Lites Dirt Karts, Adult Heavy, Adult Medium, Rookie Class, Flat Adult Clone Heavy, 250 Winged Outlaw, 500 Winged Open Outlaw, Junior Sportsman Dirt Karts, Cage Jr. 206 A | Results | | Mason Seubert (Junior Sportsman Dirt Karts) | - | - | - | - |
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| 7/7/2018 | Thunder Hill Speedway - Menomonie, WI T & T Construction Night Junior Class, Junior 1 Lites Dirt Karts, Junior 2 Lites Dirt Karts, Adult Heavy, Adult Medium, Rookie Class, 250 Winged Outlaw, 500 Winged Open Outlaw, Junior Sportsman Dirt Karts, Cage Jr. 206 A | Results | | Mason Seubert (Junior Sportsman Dirt Karts) | 7th | - | - | 14th |
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| 7/28/2018 | Thunder Hill Speedway - Menomonie, WI Timber Inn Night Winged A-Class, Junior Class, Junior 1 Lites Dirt Karts, Junior 2 Lites Dirt Karts, Adult Heavy, Adult Medium, Rookie Class, 250 Winged Outlaw, 500 Winged Open Outlaw, Junior Sportsman Dirt Karts, Cage Jr. 206 A | Results | | Mason Seubert (Junior Sportsman Dirt Karts) | - | - | - | 2nd |
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| 8/3/2018 | Thunder Hill Speedway - Menomonie, WI 2018 Advance Auto Parts OUTLAW NATIONALS (Night 1, Complete show) 500 Winged Open Outlaw, Junior Sportsman Dirt Karts, Cage Jr. 206 A | Results | | Mason Seubert (Junior Sportsman Dirt Karts) | 9th | - | - | 19th |
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| 8/4/2018 | Thunder Hill Speedway - Menomonie, WI 2018 Advance Auto Parts OUTLAW NATIONALS (Night 2, Complete show) 500 Winged Open Outlaw, Junior Sportsman Dirt Karts, Cage Jr. 206 A | Results | | Mason Seubert (Junior Sportsman Dirt Karts) | - | - | - | 18th |
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| 8/6/2018 | English Creek Speedway - Knoxville, IA 2018 Outlaw Dirt Kart Nationals DAY 1 Winged Outlaw, Adult Medium, Restricted Box Stock, Unrestricted Box Stock, 250 Winged Outlaw Heavy, 500 Winged Open Outlaw | Results | | Mason Seubert (250 Winged Outlaw Heavy) | 8th | - | 12th | - |
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