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5/1/2021 | Plymouth Speedway - Plymouth, IN Cabin Fever - Season Opener DIRTcar UMP Modifieds, Asphalt Mini Stocks, Super Sports, Stock Non-Wing, Street Stocks | Results | Chad Hartzell (Stock Non-Wing) | - | - | - | 12th |
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5/8/2021 | Plymouth Speedway - Plymouth, IN HARF Night DIRTcar UMP Modifieds, Super Sports, Stock Non-Wing, Street Stocks | Results | Chad Hartzell (Stock Non-Wing) | 5th | - | - | 15th |
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5/22/2021 | Plymouth Speedway - Plymouth, IN Saturday Night Event DIRTcar UMP Modifieds, Asphalt Mini Stocks, Stock Non-Wing, Street Stocks | Results | Chad Hartzell (Stock Non-Wing) | 5th | - | - | 4th |
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6/19/2021 | Plymouth Speedway - Plymouth, IN Saturday Night Event Asphalt Mini Stocks, Super Sports, Stock Non-Wing, Street Stocks | Results | Chad Hartzell (Stock Non-Wing) | 3rd | - | - | 2nd |
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7/1/2021 | Plymouth Speedway - Plymouth, IN USAC Sprints 410 Sprints - Non-Winged: USAC National Sprint Cars Non-Wing Outlaw, Restricted 'A' Class | Results | Chad Hartzell (Non-Wing Outlaw) | 9th | - | 6th | - |
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7/10/2021 | Plymouth Speedway - Plymouth, IN Saturday Night Event DIRTcar UMP Modifieds, Asphalt Mini Stocks, Super Sports, Stock Non-Wing | Results | Chad Hartzell (Stock Non-Wing) | 7th | - | - | - |
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7/23/2021 | Miami County Raceway - Peru, IN Non-Wing Outlaw, Restricted 'A' Class, Restricted Non Winged Micros, Winged A-Class, Stock Non-Wing, Non-Winged Sprints, 125cc Winged Micros, 125cc Non Winged Micros, 270 Winged Micros | Rain Out |
7/31/2021 | Plymouth Speedway - Plymouth, IN Saturday Night Event plus NRA Sprints 360 Sprints - Winged: NRA Sprint Invaders Super Sports, Stock Non-Wing, Street Stocks | Results | Chad Hartzell (Stock Non-Wing) | 3rd | - | - | 4th |
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8/6/2021 | US 24 Speedway - Logansport, IN Weekly Non-Wing Outlaw, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, Junior Sprints, Senior Micros | Results | Chad Hartzell (Senior Micros) | 3rd | - | - | 4th |
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8/7/2021 | Plymouth Speedway - Plymouth, IN Saturday Night Event DIRTcar UMP Modifieds, Asphalt Mini Stocks, Stock Non-Wing, Street Stocks | Results | Chad Hartzell (Stock Non-Wing) | 2nd | - | - | 7th |
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8/14/2021 | Plymouth Speedway - Plymouth, IN Season Championship Night DIRTcar UMP Modifieds, Asphalt Mini Stocks, Super Sports, Stock Non-Wing, Street Stocks | Results | Chad Hartzell (Stock Non-Wing) | 2nd | - | - | 2nd |
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8/21/2021 | US 24 Speedway - Logansport, IN USAC Speed2 Thunder Midgets, reg. program Hardy Hoagland Mem point night 7 Economy Midgets, Winged Outlaw, Non-Wing Outlaw, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, Junior Sprints, Senior Micros | Results | Chad Hartzell (Senior Micros) | 1st | - | - | DNS |
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