American Sofia Kenin counter-punched her way back from a set down against Garbine Muguruza to win her first Grand Slam title at the Australian Open with a 4-6 6-2 6-2 win on Saturday.
The 21-year-old Kenin, seeded 14th at Melbourne Park, converted her second matchpoint against the twice Grand Slam champion, who double faulted on the final point, to end an engrossing contest that lasted more than two hours.