Justin Mustari, a 26-year-old horseplayer from Des Plaines, Ill., won the 2021 National Horseplayers Championship (NHC) presented by Racetrack Television Network, Caesars Entertainment, and Bally's Las Vegas. Mustari became the youngest winner in 22 editions of the NHC. He competed against a field of 563 entries over the three-day tournament from Aug. 27-29, winning the $725,000 first-place prize and an Eclipse Award as Horseplayer of the Year. He also earns an exemption into next year's NHC finals and a berth to the 2021 Breeders' Cup Betting Challenge worth $10,000. Mustari's...