World number one Novak Djokovic, second seed and eight-time winner Roger Federer, third-placed Rafael Nadal and Roberto Bautista Agut sealed the last-four berths on Wednesday evening after winning their respective quarterfinal matches.
While Djokovic defeated Belgian David Goffin, Federer beat Japan’s Kei Nishikori. Nadal got the better of American Sam Querrey, Agut saw off Argentine Guido Pella.
In the semi-finals, while Federer will face Nadal, Djokovic will meet Agut.
The Women’s Singles last-four matches will be played today.
Seven-time champion Serena Williams will clash with Czech Barbora Strycova, with Simona Halep taking on Elina Svitolina of Ukraine.