New York: Spain's Rafael Nadal defeated Austria's Dominic Thiem in an epic five-set quarter-final at the US Open tennis tournament.
The Spaniard next runs into Argentine Juan Martin Del Potro, who defeated American John Isner 6-7 (5), 6-3, 7-6 (4), 6-2 also in a marathon.
Naomi Osaka made it to her maiden Grand Slam semifinals when she whipped Lesia Tsurenko 6-1, 6-1 in 59 minutes.
Serena Williams fought back from a break down in the first set to beat Czech eighth seed Karolina Pliskova 6-4, 6-3 to enter the last four stage.
Meanwile, defending champion Sloane Stephens was dumped out in the quarter-finals after losing 6-2, 6-3 to Latvian 19th seed Anastasija Sevastova also in sweltering conditions.