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| 3/27/2021 | Port City Raceway - Tulsa, OK Weekly Points Race Winged Outlaw, Non-Wing Outlaw, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, Junior Sprints, Sportsman Micros, Hybrid 600cc Micros | Results | | Mason Seubert (Non-Wing Outlaw) | 6th | - | 10th | - | | Mason Seubert (Stock Non-Wing) | 9th | - | 10th | - |
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| 4/10/2021 | Mississippi Thunder Kart Track - Fountain City, WI Practice Winged Sprints, Restricted 'A' Class, 125cc Winged Micros, Junior 1 Lites Dirt Karts, Junior 2 Lites Dirt Karts, Dirt Cage Kart Junior 1, 65cc, 250cc Open, Flat Adult Clone Heavy, 250 Winged Outlaw, LO 206 Dirt Karts, Junior Slingshots | Results | | Mason Seubert (Restricted 'A' Class) | - | - | - | - |
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| 4/17/2021 | Mississippi Thunder Kart Track - Fountain City, WI Practice Winged Sprints, Restricted 'A' Class, 125cc Winged Micros, Junior 1 Lites Dirt Karts, Junior 2 Lites Dirt Karts, Dirt Cage Kart Junior 1, 65cc, 250cc Open, Flat Adult Clone Heavy, 250 Winged Outlaw, LO 206 Dirt Karts | Results | | Mason Seubert (Restricted 'A' Class) | - | - | - | - |
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| 4/30/2021 | Princeton Speedway - Princeton, MN Hobby Stocks, A Modifieds, Winged A-Class, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | Mason Seubert (Winged A-Class) | 2nd | - | - | 2nd |
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| 5/8/2021 | Cedar Lake Speedway - New Richmond, WI Spring Sprint Special 410 Sprints - Winged: IRA Interstate Racing Association Limited Sprints - Winged: Upper Midwest Sprint Car Series 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series Winged A-Class, 305 Sprints - Non-Winged | Results | | Mason Seubert (Winged A-Class) | 3rd | - | - | 3rd |
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| 5/9/2021 | Granite City Motor Park - Sauk Rapids, MN Mother's Day Special with Micro Sprints Winged A-Class, WISSOTA Midwest Mods, WISSOTA Mod Four, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock, WISSOTA Hornet | Results | | Mason Seubert (Winged A-Class) | 1st | - | - | 4th |
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| 5/14/2021 | Princeton Speedway - Princeton, MN Meet the drivers night (kids Night) Hobby Stocks, A Modifieds, Winged A-Class, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | Mason Seubert (Winged A-Class) | 2nd | - | - | 9th |
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| 5/15/2021 | Mississippi Thunder Kart Track - Fountain City, WI Points Race #2 Winged Sprints, Restricted 'A' Class, 125cc Winged Micros, Junior Champ, Junior 1 Lites Dirt Karts, Junior 2 Lites Dirt Karts, Adult Open, Dirt Cage Kart Junior 1, Flat Adult Clone Heavy, 250 Winged Outlaw, 500 Winged Open Outlaw, LO 206 Dirt Karts, Junior Slingshots | Results | | Mason Seubert (Winged Sprints) | 5th (DNF) | - | - | 7th |
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| 5/29/2021 | Cedar Lake Speedway - New Richmond, WI Pack The Track Night / Cook Memorial Winged A-Class, Pony Stock, Super Stocks, USRA Late Models | Results | | Mason Seubert (Winged A-Class) | 2nd | - | - | 2nd |
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| 6/4/2021 | Princeton Speedway - Princeton, MN Hobby Stocks, A Modifieds, Winged A-Class, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | Mason Seubert (Winged A-Class) | 2nd | - | - | 3rd |
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| 6/5/2021 | Granite City Motor Park - Sauk Rapids, MN 410 Sprints - Winged: World of Outlaws Winged A-Class, WISSOTA Midwest Mods | Results | | Mason Seubert (Winged A-Class) | 3rd | - | - | 5th |
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| 6/9/2021 | Thunder Hill Speedway - Menomonie, WI 2021 Season Opener Synergy Co-op Night "Storm Series Event" Junior Class, Rookie Class, 250 Winged Outlaw, 500 Winged Open Outlaw, Junior Sportsman Dirt Karts, Cage Jr. 206 A | Results | | Mason Seubert (Junior Sportsman Dirt Karts) | 5th | - | - | 4th |
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| 6/19/2021 | Ogilvie Raceway - Ogilvie, MN Davey Tabor Memorial [Non-MSTS points] 360 Sprints - Winged: Midwest Sprint Touring Series with Midwest Power Series Limited Sprints - Winged: Upper Midwest Sprint Car Series 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series Vintage Modifieds: Northern Vintage Stockcar Racers Winged Sprints, Winged A-Class, Non-Winged Sprints, Vintage Full Body Stock Cars, WISSOTA Hornet | Results | | Mason Seubert (Winged A-Class) | 1st | - | - | 7th |
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| 6/23/2021 | Thunder Hill Speedway - Menomonie, WI 2021 Season Opener Cody Plumbing Night "Storm Series Event" Junior Class, 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 | - | - | 12th |
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| 7/4/2021 | Benton County Speedway - Vinton, IA Sprint Invaders - Benton County Speedway 360 Sprints - Winged: Sprint Invaders Winged Outlaw, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Mason Seubert (Winged Outlaw) | 3rd | - | - | 4th |
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| 7/10/2021 | Mississippi Thunder Kart Track - Fountain City, WI Points Race #5 Winged Sprints, Restricted 'A' Class, 125cc Winged Micros, Junior 1 Lites Dirt Karts, Junior 2 Lites Dirt Karts, Adult Open, Dirt Cage Kart Junior 1, Flat Adult Clone Heavy, 250 Winged Outlaw, 500 Winged Open Outlaw, LO 206 Dirt Karts, Junior Slingshots | Results | | Mason Seubert (Winged Sprints) | 2nd | 5th | - | 11th |
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| 7/16/2021 | Mississippi Thunder Speedway - Fountain City, WI USRA Late Model Special 125cc Winged Micros, Hornets, USRA B-Mods, USRA Late Models, USRA Hobby Stocks | Results | | Mason Seubert (125cc Winged Micros) | 4th | - | - | 3rd |
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| 7/17/2021 | Mississippi Thunder Kart Track - Fountain City, WI Points Race #6 Winged Sprints, Restricted 'A' Class, 125cc Winged Micros, Junior 1 Lites Dirt Karts, Junior 2 Lites Dirt Karts, Dirt Cage Kart Junior 1, Flat Adult Clone Heavy, 250 Winged Outlaw, LO 206 Dirt Karts, Junior Slingshots | Results | | Mason Seubert (Winged Sprints) | 2nd | 6th | - | 5th |
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| 7/21/2021 | Thunder Hill Speedway - Menomonie, WI 2021 T & T Construction Night "Storm Series Event" Junior Class, Rookie Class, 250 Winged Outlaw, 500 Winged Open Outlaw, Junior Sportsman Dirt Karts, Cage Jr. 206 A | Results | | Mason Seubert (Junior Sportsman Dirt Karts) | 4th | - | - | 12th |
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| 7/24/2021 | Mississippi Thunder Kart Track - Fountain City, WI Points Race #7 Restricted 'A' Class, 125cc Winged Micros, Junior Class, Junior Champ, Junior 1 Lites Dirt Karts, Junior 2 Lites Dirt Karts, Dirt Cage Kart Junior 1, Ultra Lightweight SportBike, 65cc, Flat Adult Clone Heavy, 250 Winged Outlaw, 500 Winged Open Outlaw, LO 206 Dirt Karts, Junior Slingshots | Results | | Mason Seubert (Restricted 'A' Class) | 2nd | - | - | 1st | | Mason Seubert (125cc Winged Micros) | 5th | - | - | 6th |
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| 7/30/2021 | Princeton Speedway - Princeton, MN Hobby Stocks, A Modifieds, Winged A-Class, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four | Results | | Mason Seubert (Winged A-Class) | 1st | - | - | 3rd |
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| 7/31/2021 | North Central Speedway - Brainerd, MN Hobby Stocks, A Modifieds, Winged A-Class, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four | Results | | Mason Seubert (Winged A-Class) | 1st | - | - | 2nd |
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| 8/1/2021 | Granite City Motor Park - Sauk Rapids, MN Regular Night Races with Micro Sprints Winged A-Class, WISSOTA Midwest Mods, WISSOTA Mod Four, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Hornet | Results | | Mason Seubert (Winged A-Class) | 1st | - | - | 8th (DNF) |
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| 8/5/2021 | Mississippi Thunder Kart Track - Fountain City, WI Winged Sprints, 125cc Winged Micros, Junior 2 Lites Dirt Karts, Dirt Cage Kart Junior 1, Flat Adult Clone Heavy, 250 Winged Outlaw, 500 Winged Open Outlaw, LO 206 Dirt Karts, Junior Slingshots | Results | | Mason Seubert (Winged Sprints) | - | - | - | - |
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| 8/6/2021 | Princeton Speedway - Princeton, MN Hobby Stocks, A Modifieds, Winged A-Class, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | Mason Seubert (Winged A-Class) | 2nd | - | - | 7th |
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| 8/7/2021 | Mississippi Thunder Kart Track - Fountain City, WI Battle of the Wings Winged Sprints, 125cc Winged Micros, Junior 1 Lites Dirt Karts, Junior 2 Lites Dirt Karts, Dirt Cage Kart Junior 1, Flat Adult Clone Heavy, 250 Winged Outlaw, 500 Winged Open Outlaw, LO 206 Dirt Karts, Junior Slingshots | Rain Out |
| 8/21/2021 | Mississippi Thunder Kart Track - Fountain City, WI Points Race #8 Winged Sprints, Restricted 'A' Class, 125cc Winged Micros, Junior Class, Junior Champ, Junior 1 Lites Dirt Karts, Junior 2 Lites Dirt Karts, Adult Open, Dirt Cage Kart Junior 1, Flat Adult Clone Heavy, 250 Winged Outlaw, LO 206 Dirt Karts, Junior Slingshots | Results | | Mason Seubert (Winged Sprints) | 7th | - | - | 14th |
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| 9/4/2021 | North Central Speedway - Brainerd, MN Mighty Axe Hobby Stocks, A Modifieds, Winged A-Class, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | Mason Seubert (Winged A-Class) | 1st | - | - | 3rd |
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| 9/5/2021 | North Central Speedway - Brainerd, MN Mighty Axe night 2 Hobby Stocks, A Modifieds, Winged A-Class, B Modifieds, Sport Compact, IMCA Stock Car, WISSOTA Mod Four, WISSOTA Super Stock | Results | | Mason Seubert (Winged A-Class) | 1st | - | - | 10th (DNF) |
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| 9/24/2021 | Mississippi Thunder Kart Track - Fountain City, WI Spooktacular - Day 1 Winged Sprints, 125cc Winged Micros, Junior Sprints, Junior 1 Lites Dirt Karts, Junior 2 Lites Dirt Karts, Dirt Cage Kart Junior 1, Flat Adult Clone Heavy, 250 Winged Outlaw, LO 206 Dirt Karts, Junior Slingshots | Results | | Mason Seubert (Winged Sprints) | 4th | - | - | 2nd |
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| 9/25/2021 | Mississippi Thunder Kart Track - Fountain City, WI Spooktacular - Day 2 Winged Sprints, 125cc Winged Micros, Junior Sprints, Junior Champ, Junior 1 Lites Dirt Karts, Junior 2 Lites Dirt Karts, Dirt Cage Kart Junior 1, Flat Adult Clone Heavy, 250 Winged Outlaw, LO 206 Dirt Karts, Mod Lites, Junior Slingshots, LO 206 Cage Adult Winged | Results | | Mason Seubert (Winged Sprints) | 1st | 1st | - | 1st |
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| 10/1/2021 | Brooklyn Raceway - Brooklyn, IA Battle at Brooklyn Raceway Winged A-Class: Midwest Micro Series Winged Outlaw, Non-Wing Outlaw, Restricted 'A' Class, Junior Sprints | Results | | Mason Seubert (Non-Wing Outlaw) | 2nd | - | - | 3rd | | Mason Seubert (Winged A-Class) | 2nd | - | - | 10th |
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| 10/2/2021 | Brooklyn Raceway - Brooklyn, IA Battle at Brooklyn Raceway Winged A-Class: Midwest Micro Series Winged Outlaw, Non-Wing Outlaw, Restricted 'A' Class, Junior Sprints | Results | | Mason Seubert (Non-Wing Outlaw) | 4th | - | - | 11th | | Mason Seubert (Winged A-Class) | 1st | - | - | - |
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| 10/23/2021 | Ogilvie Raceway - Ogilvie, MN Topless Nationals Night Two A Modifieds, Winged A-Class, B Modifieds, Street Stocks, Dirt 4 cyl Modifieds, Super Stocks | Results | | Mason Seubert (Winged A-Class) | 1st | - | - | 3rd |
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| 12/27/2021 | Tulsa Expo Raceway - Tulsa, OK AM: Early Move-In / PM: Regular Move-In Winged Outlaw, Non-Wing Outlaw, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, Junior Sprints | Results | | Mason Seubert (Non-Wing Outlaw) | - | - | - | - |
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| 12/28/2021 | Tulsa Expo Raceway - Tulsa, OK PM: Practice Winged Outlaw, Non-Wing Outlaw, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, Junior Sprints | Results | | Mason Seubert (Non-Wing Outlaw) | - | - | - | - | | Mason Seubert (Winged A-Class) | - | - | - | - | | Mason Seubert (Stock Non-Wing) | - | - | - | - |
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| 12/29/2021 | Tulsa Expo Raceway - Tulsa, OK Races Winged Outlaw, Non-Wing Outlaw, Restricted 'A' Class, Winged A-Class | Results | | Mason Seubert (Non-Wing Outlaw) | 6th | - | - | - | | Mason Seubert (Winged A-Class) | 8th | - | - | - |
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| 12/30/2021 | Tulsa Expo Raceway - Tulsa, OK Races Non-Wing Outlaw, Winged A-Class, Stock Non-Wing, Junior Sprints | Results | | Mason Seubert (Non-Wing Outlaw) | - | - | - | - | | Mason Seubert (Winged A-Class) | - | - | - | - | | Mason Seubert (Stock Non-Wing) | 9th | - | - | - |
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| 12/31/2021 | Tulsa Expo Raceway - Tulsa, OK Races Winged Outlaw, Non-Wing Outlaw, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, Junior Sprints | Results | | Mason Seubert (Stock Non-Wing) | - | - | - | - |
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