MELBOURNE, Australia -- Top-ranked Ash Barty was upset Wednesday by No. 25-seeded Karolina Muchova in the quarterfinals at the Australian Open, 1-6, 6-3, 6-2.
Muchova earned her first semifinal berth in a Grand Slam, and her comeback win ended Barty's bid to become the first Australian woman to win the title in Melbourne since Chris O'Neil in 1978.
Muchova played poorly at the start of her second major quarterfinal, and Barty raced to a 5-0 lead while losing only six points. After nine games, Muchova had one winner and 18 unforced errors.
Early in the second set, Muchova took an injury timeout that lasted nearly 10 minutes.