LCM (50 Meters) 7:45 p.m. Finals (varying based on broadcast needs) World Record: 3:55.38, Ariarne Titmus (AUS) – 2023 World Championships. American Record: 3:56.46, Katie Ledecky (USA) – 2016 Olympic Games. U.S. Open Record: 3:57.94, Katie Ledecky (USA) – 2018 TYR Pro Swim Series. World Junior Record:…