The Latest at the Australian Open on Thursday (all times local):
The extreme heat rule has been invoked for the first women’s semifinal as the heat surges toward 100 degrees Fahrenheit (38 Celsius).
That means that there will be a 10-minute break after the second set if the match between Petra Kvitova and Danielle Collins goes to a third set.
The roof at Rod Laver Arena is open, which lets more of the sizzling sun in.
The chair umpire who penalized Serena Williams a game in last year’s chaotic U.S. Open women’s final is officiating in the Australian Open semifinals.
Carlos Ramos was given the assignment for the first semifinal in Melbourne, between Petra Kvitova and Danielle Collins.
Thousands of spectators at the U.S. Open title match last September booed after Williams confronted Ramos about his rulings.
Williams was cited by Ramos for getting coaching signals; for breaking her racket, which automatically cost her a point because it was her second code violation of the match; and for calling Ramos a “thief,” which cost her a game because it was her third code violation.
John Peers and Henri Kontinen have combined to become the first pair through to the men’s doubles final after beating Leonardo Mayer and Joao Sousa 6-1, 7-6 (6) at the Australian Open.
Peers and Kontinen, who combined to win the 2017 Australian Open doubles title, will play either the American team of Ryan Harrison and Sam Querrey or the French combination of Pierre-Hugues Herbert and Nicolas Mahut.
The women’s singles finalists will be determined later Thursday. Two-time Wimbledon winner Petra Kvitova was playing Danielle Collins in the first of the semifinals on Rod Laver Arena, followed by U.S. Open champion Naomi Osaka against seventh-seeded Karolina Pliskova.
The first of the men’s semifinals will be in the night session, when 17-time major winner Rafael Nadal takes on 20-year-old Stefanos Tsitsipas.
The weather was hot and sunny at Melbourne Park, with the temperature approaching 100 degrees Fahrenheit (38 Celsius).