MELBOURNE, Australia -- Leading 6-1, 2-1 in her quarterfinal match against 25th seed Karolina Muchova, world No. 1 Ashleigh Barty had one foot in the last four of the Australian Open, and the nation's dream of crowning its first home-grown champion since Christine O'Neil in 1978 was getting closer. Barty utterly dominated Muchova in the opening set, continuing the dominant run she had been on this year at Melbourne Park. She won 25 points, to Muchova's 11, made just six unforced errors and was playing a brand of tennis which would have had the remaining four women -- including Serena Williams...