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| 3/31/2018 | Legit Speedway Park - West Plains, MO Weekly Points Race Presented by Midwest Walnut DIRTcar Late Models, Factory Stocks, Hobby Stocks, A Modifieds, B Modifieds, Super Stocks | Rain Out |
| 4/21/2018 | Legit Speedway Park - West Plains, MO Weekly Points Race: Community Night Plus Youth Go-Karts DIRTcar Late Models, Factory Stocks, Hobby Stocks, A Modifieds, B Modifieds, Super Stocks | Results | | Robbie Underwood (Factory Stocks) | 2nd | - | - | 3rd |
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| 4/28/2018 | Legit Speedway Park - West Plains, MO $3000 to Win: Late Models Presented by West Plains Resaw & Missouri Hardwood Plus Weekly Points Race Dirt Super Late Models: Lucas Oil MLRA Factory Stocks, Hobby Stocks, A Modifieds, B Modifieds, Super Stocks | Results | | Robbie Underwood (Factory Stocks) | 3rd | - | - | 4th |
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| 5/5/2018 | Legit Speedway Park - West Plains, MO Weekly Points Race: Community Night Plus Youth Go-Karts DIRTcar Late Models, Factory Stocks, Hobby Stocks, A Modifieds, B Modifieds, Super Stocks | Results | | Robbie Underwood (Factory Stocks) | 3rd | - | - | 5th |
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| 5/12/2018 | Legit Speedway Park - West Plains, MO Cash Money Super Dirt Series Presented by Midwest Sheet Metal Plus Weekly Points Race DIRTcar Late Models, Factory Stocks, Hobby Stocks, A Modifieds, B Modifieds, Super Stocks | Results | | Robbie Underwood (Factory Stocks) | 5th | - | - | 5th |
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| 5/19/2018 | Legit Speedway Park - West Plains, MO Weekly Points Race: Veterans Night DIRTcar Late Models, Factory Stocks, Hobby Stocks, A Modifieds, B Modifieds, Super Stocks | Results | | Robbie Underwood (Factory Stocks) | 4th | - | - | 3rd |
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| 5/26/2018 | Legit Speedway Park - West Plains, MO Scrappin' 40 B-Mod & Super Stock $1,500 to win Plus Hobby Stock & LM DIRTcar Late Models, Factory Stocks, Hobby Stocks, A Modifieds, B Modifieds, Super Stocks | Results | | Robbie Underwood (Factory Stocks) | 2nd | - | - | 3rd |
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| 6/9/2018 | Legit Speedway Park - West Plains, MO Weekly Points Race Presented by Hirsch Feed and Farm Supply DIRTcar Late Models, Factory Stocks, Hobby Stocks, A Modifieds, B Modifieds, Super Stocks | Results | | Robbie Underwood (Factory Stocks) | 2nd | - | - | 2nd |
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| 6/16/2018 | Legit Speedway Park - West Plains, MO Weekly Points Race: Community Night Plus Youth Go-Karts DIRTcar Late Models, Factory Stocks, Hobby Stocks, A Modifieds, B Modifieds, Super Stocks | Results | | Robbie Underwood (Factory Stocks) | 7th | - | - | 3rd |
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| 6/23/2018 | Legit Speedway Park - West Plains, MO 360 Sprints - Winged: ASCS Warrior Region with ASCS Mid-South Region Winged Sprints, DIRTcar Late Models, Factory Stocks, Hobby Stocks, A Modifieds, B Modifieds, Super Stocks | Results | | Robbie Underwood (Factory Stocks) | 1st | - | - | 1st |
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| 6/30/2018 | Legit Speedway Park - West Plains, MO Weekly Points Race Presented by Jasper Engines DIRTcar Late Models, Factory Stocks, Hobby Stocks, A Modifieds, B Modifieds, Super Stocks | Results | | Robbie Underwood (Factory Stocks) | 2nd | - | - | 1st |
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| 7/6/2018 | Legit Speedway Park - West Plains, MO Firecracker Classic Round 2 Qualifying Factory Stocks, B Modifieds, Super Stocks | Results | | Robbie Underwood (Factory Stocks) | 2nd | - | - | 4th |
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| 7/21/2018 | Legit Speedway Park - West Plains, MO Weekly Points Race: Community Night Plus Youth Go-Karts DIRTcar Late Models, Factory Stocks, Hobby Stocks, A Modifieds, B Modifieds, Super Stocks | Results | | Robbie Underwood (Factory Stocks) | 1st | - | - | 3rd |
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| 7/28/2018 | Legit Speedway Park - West Plains, MO $3000 to win: Late Models Presented by West Plains Resaw & Missouri Hardwood Plus Weekly Points Race DIRTcar Late Models, Factory Stocks, Hobby Stocks, A Modifieds, B Modifieds, Super Stocks | Results | | Robbie Underwood (Factory Stocks) | 1st | - | - | 3rd |
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| 8/4/2018 | Legit Speedway Park - West Plains, MO Weekly Points Race Presented by Doug Collins Trucking, LLC $1000 to win Hobby Stock DIRTcar Late Models, Factory Stocks, Hobby Stocks, A Modifieds, B Modifieds, Super Stocks | Results | | Robbie Underwood (Factory Stocks) | 2nd | - | - | 4th |
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| 8/25/2018 | Legit Speedway Park - West Plains, MO Weekly Points Race Presented by Midwest Walnut Company DIRTcar Late Models, Factory Stocks, Hobby Stocks, A Modifieds, B Modifieds, Super Stocks | Results | | Robbie Underwood (Factory Stocks) | 2nd | - | - | 4th |
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| 8/31/2018 | Legit Speedway Park - West Plains, MO 4th Annual Reliable Chevrolet Big Lot Bonanza Factory Stocks, A Modifieds, B Modifieds, Super Stocks | Results | | Robbie Underwood (Factory Stocks) | 1st | - | - | 1st |
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