World number two Rafael Nadal defeated America's Frances Tiafoe 6-3, 6-4, 6-2 in the quarter-finals of Australian Open 2019 on Tuesday. With this, the 32-year-old became the fourth man to reach 30 Grand Slam semi-finals, after Roger Federer (43), Novak Djokovic (33) and Jimmy Connors (31). Nadal will next face 20-year-old Stefanos Tsitsipas, who knocked Federer out in the round-of-16.