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| 3/7/2020 | Red Dirt Raceway - Meeker, OK 305 Sprints - Winged: SSO-Sprint Series of Oklahoma Restricted 'A' Class: NOW600 Restricted Micros Winged A-Class: NOW600 A-Class Micros Stock Non-Wing: NOW600 Non-Wing Micros B Modifieds, Hornets, Pure Stock | Results | | Garrett Donnell (Pure Stock) | 2nd | - | - | 16th |
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| 3/8/2020 | Red Dirt Raceway - Meeker, OK 305 Sprints - Winged: SSO-Sprint Series of Oklahoma Restricted 'A' Class: NOW600 Restricted Micros Winged A-Class: NOW600 A-Class Micros Stock Non-Wing: NOW600 Non-Wing Micros B Modifieds, Hornets, 600cc Modifieds, Pure Stock | Results | | Garrett Donnell (Pure Stock) | 3rd | - | - | 5th |
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| 5/30/2020 | Oklahoma Sports Park - Ada, OK Season Opener B Modifieds, Street Stocks, Asphalt Sport Mods, Limited Sport Mod, Pure Stock | Results | | Garrett Donnell (Pure Stock) | 1st | - | - | 2nd |
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| 6/6/2020 | Oklahoma Sports Park - Ada, OK Non-Winged Sprints: United Sprint League B Modifieds, Street Stocks, Asphalt Sport Mods, Limited Sport Mod, Pure Stock | Results | | Garrett Donnell (Pure Stock) | 1st | - | - | 1st |
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| 6/20/2020 | Oklahoma Sports Park - Ada, OK A Modifieds: TOMS - Touring Outlaw Modified Series B Modifieds, Street Stocks, Asphalt Sport Mods, Limited Sport Mod, Pure Stock | Results | | Garrett Donnell (Pure Stock) | 2nd | - | - | 12th (DNF) |
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| 7/3/2020 | Oklahoma Sports Park - Ada, OK 4th of July Celebration Enduro, Pure Stock | Results | | Garrett Donnell (Pure Stock) | 1st | - | - | 1st |
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| 7/18/2020 | Oklahoma Sports Park - Ada, OK Fan Appreciation B Modifieds, Street Stocks, Asphalt Sport Mods, Limited Sport Mod, Pure Stock | Results | | Garrett Donnell (Pure Stock) | 2nd | - | - | 4th |
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| 7/25/2020 | Oklahoma Sports Park - Ada, OK Sooner Late Model Series + Regular Racing Program Dirt Super Late Models, B Modifieds, Street Stocks, Asphalt Sport Mods, Limited Sport Mod, Pure Stock | Results | | Garrett Donnell (Pure Stock) | 2nd | - | - | 6th |
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| 8/15/2020 | Oklahoma Sports Park - Ada, OK Racing All Classes B Modifieds, Street Stocks, Asphalt Sport Mods, Limited Sport Mod, Pure Stock | Results | | Garrett Donnell (Pure Stock) | 2nd | - | - | 4th |
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| 8/29/2020 | Oklahoma Sports Park - Ada, OK Sooner Late Model Series + Regular Racing Program Dirt Super Late Models, B Modifieds, Street Stocks, Asphalt Sport Mods, Limited Sport Mod, Pure Stock | Results | | Garrett Donnell (Dirt Super Late Models) | 4th | - | - | 12th | | Garrett Donnell (Pure Stock) | 5th | - | 1st | 6th |
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| 9/5/2020 | Longdale Speedway - Longdale, OK Labor Day Clash - Sooner Late Model Series Dirt Super Late Models: Sooner Late Model Series B Modifieds, Street Stocks, USRA Modifieds | Results | | Garrett Donnell (Dirt Super Late Models) | 7th | - | - | - |
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| 9/19/2020 | Oklahoma Sports Park - Ada, OK Enduro + Fireworks + $500 to win Pure Stock DIRTcar Factory Stock, Enduro | Results | | Garrett Donnell (DIRTcar Factory Stock) | 3rd | - | - | 5th |
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| 10/17/2020 | Oklahoma Sports Park - Ada, OK OSP Fall Nationals B Modifieds, Street Stocks, Asphalt Sport Mods, Limited Sport Mod, Pure Stock | Results | | Garrett Donnell (Pure Stock) | 2nd | - | - | 9th |
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