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| 3/5/2021 | Heart O' Texas Speedway - Waco, TX Opening Night - Jack Bagby Memorial - 1K to win Modifieds Factory Stocks, Street Stocks, Limited Sport Mod, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Markiss Harcrow (IMCA Stock Car) | 1st | - | - | 4th |
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| 3/12/2021 | Heart O' Texas Speedway - Waco, TX Bandit Outlaw Sprint Series - Gene Adamcik Memorial Winged Sprints: Bandits Outlaw Sprint Series Factory Stocks, Street Stocks, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Markiss Harcrow (IMCA Stock Car) | 2nd | - | - | 13th |
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| 3/13/2021 | Cotton Bowl Speedway - Paige, TX Veterans Night Honoring VFW Post 6115 Presented by Gunslinger Ammo Factory Stocks, Street Stocks, Sport Compact, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Markiss Harcrow (IMCA Stock Car) | 5th | - | - | 4th |
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| 3/19/2021 | Heart O' Texas Speedway - Waco, TX Regular Race Night Factory Stocks, Street Stocks, Limited Sport Mod, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Markiss Harcrow (IMCA Stock Car) | 3rd | - | - | 16th |
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| 3/26/2021 | Heart O' Texas Speedway - Waco, TX DFW Local Late Model Series - Easter Basket Giveaway Factory Stocks, Street Stocks, Dirt Late Models, Dirt Crate Late Models, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Markiss Harcrow (IMCA Stock Car) | 1st | - | - | 4th |
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| 3/27/2021 | Cotton Bowl Speedway - Paige, TX Race - All Classes Factory Stocks, Street Stocks, Sport Compact, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Markiss Harcrow (IMCA Stock Car) | 1st | - | - | 1st |
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| 4/2/2021 | Heart O' Texas Speedway - Waco, TX Touring Outlaw Modified Series - Autism Awareness Night A Modifieds: TOMS - Touring Outlaw Modified Series Factory Stocks, Street Stocks, Limited Sport Mod, IMCA Southern SportMod, IMCA Stock Car | Results | | Markiss Harcrow (IMCA Stock Car) | 3rd | - | - | 13th |
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| 4/10/2021 | Cotton Bowl Speedway - Paige, TX Race - All Classes Factory Stocks, Street Stocks, Sport Compact, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Markiss Harcrow (IMCA Stock Car) | 1st | - | - | 7th |
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| 5/15/2021 | Cotton Bowl Speedway - Paige, TX Race - All Classes & DCRST Dwarf: Dwarf Car Racing Series of Texas Factory Stocks, Street Stocks, Sport Compact, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Markiss Harcrow (IMCA Stock Car) | 2nd | - | - | 3rd |
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| 5/30/2021 | Heart O' Texas Speedway - Waco, TX All Star Shootout Fueled by Fast Shafts - 2021 Wall of Fame Induction Ceremony Factory Stocks, Street Stocks, Limited Sport Mod, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Markiss Harcrow (IMCA Stock Car) | 1st | - | - | 4th |
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| 6/12/2021 | Cotton Bowl Speedway - Paige, TX Race - All Classes & DCRST Dwarf: Dwarf Car Racing Series of Texas Factory Stocks, Street Stocks, Sport Compact, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Markiss Harcrow (IMCA Stock Car) | 3rd | - | - | 6th |
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| 6/26/2021 | Cotton Bowl Speedway - Paige, TX Race - All Classes Factory Stocks, Street Stocks, Sport Compact, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Markiss Harcrow (IMCA Stock Car) | 1st | - | - | 6th |
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| 7/2/2021 | Heart O' Texas Speedway - Waco, TX Annual Fireworks Show - Sunoco Fuels Night - 1K to win Modifieds Factory Stocks, Street Stocks, Limited Sport Mod, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Markiss Harcrow (IMCA Stock Car) | 2nd | - | - | 5th |
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| 7/3/2021 | Heart O' Texas Speedway - Waco, TX Baby Blue Harcrow Memorial Stock Car Shootout Factory Stocks, Street Stocks, Limited Sport Mod, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Rain Out |
| 7/3/2021 | Kennedale Speedway Park - Kennedale, TX Factory Stocks, Stock Cars, IMCA Southern SportMod, IMCA Stock Car, IMCA Sport Compact | Results | | Markiss Harcrow (IMCA Stock Car) | 8th | - | - | 7th |
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| 7/16/2021 | Heart O' Texas Speedway - Waco, TX Regular Race Night - Lone Star Dwarf Cars Factory Stocks, Street Stocks, Dwarf, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Markiss Harcrow (IMCA Stock Car) | 1st | - | - | 3rd |
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| 7/17/2021 | Cotton Bowl Speedway - Paige, TX Summer Showdown Series 1 - All Classes & DCRST Dwarf: Dwarf Car Racing Series of Texas Factory Stocks, Street Stocks, Sport Compact, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Markiss Harcrow (IMCA Stock Car) | 2nd | - | - | 2nd |
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| 7/23/2021 | Heart O' Texas Speedway - Waco, TX Texas Crate Late Model Series - Driver Autographs at Intermission - Kids 12 and under Free Factory Stocks, Street Stocks, Dirt Late Models, Limited Sport Mod, Dirt Crate Late Models, IMCA Southern SportMod, IMCA Stock Car | Results | | Markiss Harcrow (IMCA Stock Car) | 4th | - | - | 4th |
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| 7/24/2021 | Cotton Bowl Speedway - Paige, TX Summer Showdown Series 2 - All Classes Factory Stocks, Street Stocks, Sport Compact, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Markiss Harcrow (IMCA Stock Car) | 5th | - | - | 1st |
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| 8/7/2021 | Cotton Bowl Speedway - Paige, TX Summer Showdown Series Finale - All Classes & DCRST Dwarf: Dwarf Car Racing Series of Texas Factory Stocks, Street Stocks, Sport Compact, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Markiss Harcrow (IMCA Stock Car) | 2nd | - | - | 3rd |
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| 8/13/2021 | Heart O' Texas Speedway - Waco, TX Factory Stocks, Street Stocks, 305 Sprints - Non-Winged, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Markiss Harcrow (IMCA Stock Car) | 3rd | - | - | 1st |
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| 8/21/2021 | Cotton Bowl Speedway - Paige, TX Race - All Classes Factory Stocks, Street Stocks, Sport Compact, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Markiss Harcrow (IMCA Stock Car) | 3rd | - | - | 2nd |
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| 9/10/2021 | Kennedale Speedway Park - Kennedale, TX FACTORY STOCK & SPORT MOD SHOOTOUT + STOCK CARS & SPORT COMPACTS Factory Stocks, IMCA Southern SportMod, IMCA Stock Car, IMCA Sport Compact | Results | | Markiss Harcrow (IMCA Stock Car) | - | - | - | - |
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| 9/18/2021 | Cotton Bowl Speedway - Paige, TX Race - All Classes Factory Stocks, Street Stocks, Sport Compact, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Markiss Harcrow (IMCA Stock Car) | 4th | - | - | 3rd |
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| 9/25/2021 | Cotton Bowl Speedway - Paige, TX Race - All Classes & DCRST Dwarf: Dwarf Car Racing Series of Texas Factory Stocks, Street Stocks, Sport Compact, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Markiss Harcrow (IMCA Stock Car) | 2nd | - | - | 4th |
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| 10/8/2021 | Cotton Bowl Speedway - Paige, TX Octoberfast Factory Stocks, B Modifieds, Street Stocks, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Markiss Harcrow (IMCA Stock Car) | 3rd | - | - | - |
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| 10/9/2021 | Cotton Bowl Speedway - Paige, TX Octoberfast Factory Stocks, Street Stocks, Sport Compact, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Markiss Harcrow (IMCA Stock Car) | - | - | - | 12th |
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| 10/15/2021 | Abilene Speedway - Abilene, TX SMILEY'S RACING PRODUCTS * SOUTHERN CHALLENGE Stock Cars, Street Stocks, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car, IMCA Sport Compact | Results | | Markiss Harcrow (IMCA Stock Car) | 4th | - | 3rd | 12th |
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