The 31st-ranked American, son of 1998 Australian Open champion Petr Korda, blasted past the seventh seed 7-6 (9/7), 6-3, 7-6 (7/4) on Rod Laver Arena to race into the last 16. Korda's upset teed ...

Khachanov was a semifinalist in last year's U.S. Open. Korda is a 22-year-old American whose father, Petr, won the 1998 Australian Open. Korda's mother also was a professional tennis player and ...