Missy Franklin claims record sixth gold at swimming world champs . Franklin part of victorious U.S. team in 4x100 medley relay . The United States won the first two heats and set a new mark for medals with 14 golds -- including four golds. Ruta Meilutyte beaten in women 's 50m breaststroke final .
Missy Franklin claims record sixth gold at swimming world champs . Franklin part of victorious U.S. team in 4x100 medley relay . China 's Sun Yang wins third gold in men 's distance events . Ruta Meilutyte beaten in women 's 50m breaststroke final .