| | Heat | Dash | B Feature | A Feature |
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| 2/11/2021 | Ocala Speedway - Ocala, FL 410 Sprints - Non-Winged: USAC National Sprint Cars | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | 8th | - | 6th | 16th |
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| 2/12/2021 | Ocala Speedway - Ocala, FL 410 Sprints - Non-Winged: USAC National Sprint Cars | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | 5th | - | 1st | 21st |
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| 2/13/2021 | Ocala Speedway - Ocala, FL 410 Sprints - Non-Winged: USAC National Sprint Cars | Rain Out |
| 3/27/2021 | Brownstown Speedway - Brownstown, IN No Way Out 40 410 Sprints - Non-Winged | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | - | - | - | - |
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| 4/3/2021 | Lawrenceburg Speedway - Lawrenceburg, IN 410 Sprints - Non-Winged: USAC National Sprint Cars | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | 3rd | - | - | 7th |
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| 4/10/2021 | Tri-State Speedway - Haubstadt, IN 410 Sprints - Winged: World of Outlaws | Results | | Paul Nienhiser (410 Sprints - Winged) | 6th | - | 2nd | 25th (DNF) |
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| 4/16/2021 | Bloomington Speedway - Bloomington, IN USAC Sprints - Larry RIce 410 Sprints - Non-Winged, IMCA RaceSaver Sprint Car | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | 1st | - | - | 16th |
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| 4/17/2021 | Tri-State Speedway - Haubstadt, IN 410 Sprints - Non-Winged: USAC National Sprint Cars | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | 6th | - | 1st | 15th |
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| 4/22/2021 | Grandview Speedway - Bechtelsville, PA 410 Sprints - Non-Winged: USAC National Sprint Cars | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | 7th | - | 3rd | 12th |
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| 4/23/2021 | Big Diamond Speedway - Minersville, PA 410 Sprints - Non-Winged: USAC National Sprint Cars | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | 9th | - | - | - |
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| 4/24/2021 | BAPS Motor Speedway - York Haven, PA "Larry Jackson Nationals" USAC AMSOIL National Sprint Car Series (Super Sportsman $2,569 to Win) Sportsman Sprints, 410 Sprints - Non-Winged, Super Stocks | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | 6th | - | 6th | 9th |
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| 4/25/2021 | Path Valley Speedway Park - Spring Run, PA 410 Sprints - Non-Winged: USAC National Sprint Cars | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | 3rd | - | - | 13th |
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| 4/29/2021 | Jacksonville Speedway - Jacksonville, IL 410 Sprints - Winged: World of Outlaws | Results | | Paul Nienhiser (410 Sprints - Winged) | - | - | - | - |
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| 5/2/2021 | Terre Haute Action Track - Terre Haute, IN 2021 Action Track Season Opener DIRTcar UMP Modifieds, 410 Sprints - Non-Winged, DIRTcar Pro Late Models | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | - | - | - | - |
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| 5/7/2021 | Eldora Speedway - Rossburg, OH 410 Sprints - Winged: World of Outlaws 410 Sprints - Non-Winged: USAC National Sprint Cars | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | 2nd | - | - | 14th |
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| 5/8/2021 | Eldora Speedway - Rossburg, OH 410 Sprints - Winged: World of Outlaws 410 Sprints - Non-Winged: USAC National Sprint Cars | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | 1st | - | - | 5th |
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| 5/14/2021 | Jacksonville Speedway - Jacksonville, IL $2000 410's, Non Wing Sprint, Mod, Street, Micros 410 Sprints - Winged | Results | | Paul Nienhiser (410 Sprints - Winged) | 7th (DNF) | - | - | 23rd (DNF) |
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| 5/22/2021 | Gas City I-69 Speedway - Gas City, IN All Star Indiana Invasion presented by Rayce Rudeen Foundation $6,000 to win 410 Sprints - Winged: All Star Circuit of Champions | Results | | Paul Nienhiser (410 Sprints - Winged) | 8th | - | 9th | - |
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| 5/23/2021 | Kokomo Speedway - Kokomo, IN All Star Indiana Invasion presented by Rayce Rudeen Foundation $26,000 to win 410 Sprints - Winged: All Star Circuit of Champions 410 Sprints - Non-Winged | Results | | Paul Nienhiser (410 Sprints - Winged) | 1st | 5th | - | 20th (DNF) |
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| 5/26/2021 | Terre Haute Action Track - Terre Haute, IN 410 Sprints - Non-Winged: USAC National Sprint Cars DIRTcar UMP Modifieds, Modern Vintage 401cc+ Open | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | 7th | - | 7th | 20th |
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| 5/29/2021 | Lincoln Park Speedway - Putnamville, IN MSCS SPRINTS $2,500 to win 410 Sprints - Non-Winged: Midwest Sprint Car Series MSCS DIRTcar UMP Modifieds, Factory Stocks, Super Stocks | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | - | - | - | - |
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| 5/30/2021 | 34 Raceway - West Burlington, IA Four Seasons Excavating presents Sprint Invaders 360 Sprints - Winged: Sprint Invaders Dirt Super Late Models, 2WD Trucks, Sport Compact | Results | | Paul Nienhiser (360 Sprints - Winged) | 1st | 4th | - | 1st |
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| 6/4/2021 | Lee County Speedway - Donnellson, IA 410 Sprints - Winged: MOWA-Midwest Open Wheel Association IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Sport Compact | Results | | Paul Nienhiser (410 Sprints - Winged) | DNS | - | - | DNS |
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| 6/6/2021 | Jacksonville Speedway - Jacksonville, IL 410 Sprints - Winged: MOWA-Midwest Open Wheel Association | Results | | Paul Nienhiser (410 Sprints - Winged) | 2nd | - | - | 1st |
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| 6/11/2021 | Jacksonville Speedway - Jacksonville, IL Weekly Racing 410 Sprints - Winged | Results | | Paul Nienhiser (410 Sprints - Winged) | 5th | - | - | 2nd |
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| 6/15/2021 | Grandview Speedway - Bechtelsville, PA 410 Sprints - Non-Winged: USAC National Sprint Cars 360 Sprints - Non-Winged | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | 7th | - | 6th | 17th |
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| 6/16/2021 | Bridgeport Motorsports Park - Bridgeport, NJ 410 Sprints - Non-Winged: USAC National Sprint Cars 360 Sprints - Non-Winged | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | 8th | - | 1st | 16th |
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| 6/17/2021 | Selinsgrove Speedway - Selinsgrove, PA USAC EC at Selinsgrove "Eastern Storm" 410 Sprints - Non-Winged: USAC National Sprint Cars 360 Sprints - Non-Winged: USAC East Coast Sprint Cars 410 Sprints - Winged | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | 7th | - | - | 18th |
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| 6/19/2021 | Port Royal Speedway - Port Royal, PA 410 Sprints - Non-Winged: USAC National Sprint Cars 410 Sprints - Winged, 360 Sprints - Non-Winged | Rain Out |
| 6/20/2021 | Bloomsburg Fairgrounds - Bloomsburg, PA 410 Sprints - Non-Winged: USAC National Sprint Cars Dirt Super Late Models, 360 Sprints - Non-Winged | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | 4th | - | - | 11th |
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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 | | Paul Nienhiser (410 Sprints - Non-Winged) | 4th | - | - | 8th |
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| 7/2/2021 | Lincoln Park Speedway - Putnamville, IN Bill Gardner Sprintacular Night 1 with MSCS/USAC Sprints 410 Sprints - Non-Winged: USAC National Sprint Cars with Midwest Sprint Car Series MSCS DIRTcar UMP Modifieds, Factory Stocks, Super Stocks | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | 5th | - | 1st | 11th |
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| 7/3/2021 | Lincoln Park Speedway - Putnamville, IN Bill Gardner Sprintacular Night 2 with MSCS/USAC Sprints Midgets: USAC National Midgets 410 Sprints - Non-Winged: Midwest Sprint Car Series MSCS Lightning Sprints: Midwest Mini Sprint Association | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | 4th | - | - | 15th |
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| 7/10/2021 | Knoxville Raceway - Knoxville, IA Corn Belt Clash 410 Sprints - Non-Winged: USAC National Sprint Cars Non-Winged Sprints: POWRi WAR Sprints with Midwest Wingless Racing Association 410 Sprints - Winged, Midgets | Rain Out |
| 7/23/2021 | Gas City I-69 Speedway - Gas City, IN 410 Sprints - Non-Winged: USAC National Sprint Cars | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | - | - | - | - |
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| 7/24/2021 | Kokomo Speedway - Kokomo, IN Indiana Sprint Week 410 Sprints - Non-Winged: USAC National Sprint Cars Hobby Stocks | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | 9th | - | 9th | - |
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| 7/25/2021 | Lawrenceburg Speedway - Lawrenceburg, IN 410 Sprints - Non-Winged: USAC National Sprint Cars | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | 6th | - | 12th | 22nd |
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| 7/26/2021 | Gas City I-69 Speedway - Gas City, IN 410 Sprints - Non-Winged: USAC National Sprint Cars | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | 5th | - | 17th | - |
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| 7/28/2021 | Dubuque Fairgrounds Speedway - Dubuque, IA Sprint Invaders - Dubuque Fairgrounds Speedway 360 Sprints - Winged: Sprint Invaders Hobby Stocks, A Modifieds, B Modifieds, Sport Compact | Results | | Paul Nienhiser (360 Sprints - Winged) | 2nd | 2nd | - | 15th |
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| 7/28/2021 | Terre Haute Action Track - Terre Haute, IN 410 Sprints - Non-Winged: USAC National Sprint Cars DIRTcar UMP Modifieds | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | - | - | - | - |
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| 7/29/2021 | Lincoln Park Speedway - Putnamville, IN INDIANA SPRINT WEEK 410 Sprints - Non-Winged: USAC National Sprint Cars | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | - | - | - | - |
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| 7/30/2021 | Jacksonville Speedway - Jacksonville, IL 410 Sprints - Winged: MOWA-Midwest Open Wheel Association | Results | | Paul Nienhiser (410 Sprints - Winged) | 4th | - | - | 10th |
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| 7/31/2021 | Tri-State Speedway - Haubstadt, IN 410 Sprints - Non-Winged: USAC National Sprint Cars | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | - | - | - | - |
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| 8/15/2021 | Jacksonville Speedway - Jacksonville, IL Central Illinois' Non-Wing Swing Night #2 410 Sprints - Winged, Non-Wing Outlaw | Results | | Paul Nienhiser (410 Sprints - Winged) | 1st | - | - | 13th |
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| 8/20/2021 | Lee County Speedway - Donnellson, IA Sprint Invaders - Lee County Speedway 360 Sprints - Winged: Sprint Invaders IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Sport Compact | Results | | Paul Nienhiser (360 Sprints - Winged) | 2nd | 3rd | - | 1st |
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| 8/21/2021 | 34 Raceway - West Burlington, IA Frontline Genetics Night featuring Sprint Invaders 360 Sprints - Winged: Sprint Invaders Dirt Super Late Models, Stock Cars, A Modifieds, Limited Sport Mod, Sport Compact | Results | | Paul Nienhiser (360 Sprints - Winged) | 2nd | 5th | - | - |
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| 8/26/2021 | Kokomo Speedway - Kokomo, IN Elliott’s Custom Trailers & Carts Sprint Car SmackdownX 410 Sprints - Non-Winged: USAC National Sprint Cars | Rain Out |
| 8/27/2021 | Kokomo Speedway - Kokomo, IN Elliott’s Custom Trailers & Carts Sprint Car SmackdownX 410 Sprints - Non-Winged: USAC National Sprint Cars | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | - | - | - | - |
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| 8/28/2021 | Kokomo Speedway - Kokomo, IN Elliott’s Custom Trailers & Carts Sprint Car SmackdownX 410 Sprints - Non-Winged: USAC National Sprint Cars Midgets | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | - | - | - | - |
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| 9/3/2021 | Jacksonville Speedway - Jacksonville, IL 410 Sprints - Winged, 305 Sprints - Winged | Results | | Paul Nienhiser (410 Sprints - Winged) | 4th | - | - | 15th (DNF) |
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| 9/10/2021 | Huset's Speedway - Brandon, SD Huset's Speedway USAC Nationals Midgets: USAC National Midgets 410 Sprints - Non-Winged: USAC National Sprint Cars | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | - | - | - | - |
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| 9/10/2021 | Jacksonville Speedway - Jacksonville, IL Herb Barlow Memorial 410 Sprints - Winged: MOWA-Midwest Open Wheel Association Midgets: POWRi National Midgets with POWRi Winged Outlaw | Results | | Paul Nienhiser (410 Sprints - Winged) | 2nd | - | - | 20th |
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| 9/11/2021 | Huset's Speedway - Brandon, SD Huset's Speedway USAC Nationals Midgets: USAC National Midgets 410 Sprints - Non-Winged: USAC National Sprint Cars | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | - | - | - | - |
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| 9/11/2021 | Lee County Speedway - Donnellson, IA Sprint Invaders - Lee County Speedway 360 Sprints - Winged: Sprint Invaders Dirt Mini Trucks, B Modifieds, IMCA Late Models, Sport Compact | Results | | Paul Nienhiser (360 Sprints - Winged) | 2nd | - | - | 4th |
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| 9/12/2021 | Huset's Speedway - Brandon, SD Huset's Speedway USAC Nationals Midgets: USAC National Midgets 410 Sprints - Non-Winged: USAC National Sprint Cars | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | - | - | - | - |
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| 9/17/2021 | Circle City Raceway - Indianapolis, IN USAC AMSOIL National Sprint Cars, USAC SpeeD2 Midwest Thunder Midget Series 410 Sprints - Non-Winged: USAC National Sprint Cars Midgets | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | - | - | - | - |
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| 9/17/2021 | Jacksonville Speedway - Jacksonville, IL 410 Sprints - Winged, 305 Sprints - Winged | Results | | Paul Nienhiser (410 Sprints - Winged) | - | - | - | 1st |
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| 9/18/2021 | Tri-State Speedway - Haubstadt, IN 410 Sprints - Non-Winged: USAC National Sprint Cars Lightning Sprints: Midwest Mini Sprint Association | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | - | - | - | - |
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| 9/23/2021 | Gas City I-69 Speedway - Gas City, IN Midgets: USAC National Midgets 410 Sprints - Non-Winged: USAC National Sprint Cars | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | - | - | - | - |
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| 9/24/2021 | Jacksonville Speedway - Jacksonville, IL | Results | | Paul Nienhiser (410 Sprints - Winged) | 2nd | - | - | 1st |
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| 9/25/2021 | 34 Raceway - West Burlington, IA 360 Fall Haul presented by Stronghurst Collision & Refinish 360 Sprints - Winged: Sprint Invaders Dirt Super Late Models | Results | | Paul Nienhiser (360 Sprints - Winged) | 3rd | - | - | 9th |
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| 9/25/2021 | Eldora Speedway - Rossburg, OH 4 Crown Nationals $6,000 to win 410 Sprints - Winged: All Star Circuit of Champions Midgets: USAC National Midgets 410 Sprints - Non-Winged: USAC National Sprint Cars Silver Crown: USAC Silver Crown 604 Crate Late Models | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | - | - | - | - |
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| 9/26/2021 | East Moline Speedway - East Moline, IL Sprint Invaders - East Moline (Non-points) 360 Sprints - Winged: Sprint Invaders | Results | | Paul Nienhiser (360 Sprints - Winged) | 4th | 2nd | - | 1st |
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| 10/1/2021 | Terre Haute Action Track - Terre Haute, IN 410 Sprints - Non-Winged: USAC National Sprint Cars 305 Sprints - Winged, Modern Vintage 401cc+ Open | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | - | - | - | - |
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| 10/2/2021 | Lawrenceburg Speedway - Lawrenceburg, IN 410 Sprints - Non-Winged: USAC National Sprint Cars | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | - | - | - | - |
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| 10/8/2021 | Jacksonville Speedway - Jacksonville, IL 410 Sprints - Winged: MOWA-Midwest Open Wheel Association 305 Sprints - Winged | Results | | Paul Nienhiser (410 Sprints - Winged) | 6th | - | 3rd | 3rd |
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| 10/23/2021 | Jacksonville Speedway - Jacksonville, IL | Results | | Paul Nienhiser (410 Sprints - Winged) | 2nd | - | - | 2nd |
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| 11/4/2021 | Perris Auto Speedway - Perris, CA 410 Sprints - Non-Winged: USAC National Sprint Cars | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | - | - | - | - |
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| 11/5/2021 | Perris Auto Speedway - Perris, CA 410 Sprints - Non-Winged: USAC National Sprint Cars | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | - | - | - | - |
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| 11/6/2021 | Perris Auto Speedway - Perris, CA 410 Sprints - Non-Winged: USAC National Sprint Cars | Results | | Paul Nienhiser (410 Sprints - Non-Winged) | - | - | - | - |
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