Tomic endured a harder road to the next round in Indian Wells courtesy of 18-year-old Thanasi Kokkinakis.

The Australian teenager, who had previously eliminated Juan Monaco and Guillermo Garcia-Lopez, forced a deciding set but Tomic raised his game to complete a 6-4 4-6 6-4 victory.

Also into the quarter-finals is experienced Czech Tomas Berdych, who came through a three-set battle against compatriot Lukas Rosol 6-2 4-6 6-4, and Milos Raonic, who beat Spain’s Tommy Robredo 6-3 6-2.

Awaiting the Canadian is third seed Rafael Nadal after the world number three eased past Gilles Simon with a 6-2 6-4 victory.

Second seed Roger Federer – last year’s beaten finalist – made it safely through to the last eight and a meeting with Berdych after dispatching American Jack Sock 6-3 6-2 – it was the Swiss great’s 50th match win at this tournament.

Andy Murray equalled Tim Henman’s British career-wins record of 496 after he beat France’s Adrian Mannarino in straight sets.

Murray was made to work hard for his victory against the world number 38 but came through 6-3 6-3 in California.

The world number four is into the last eight for the fifth time and will now face Spain’s Feliciano Lopez, who pulled off a shock 6-4 7-6 (7/2) win against Japan’s Kei Nishikori.

Simona Halep became the first player to reach the semi-finals of the women’s competition as she beat Carla Suarez Navarro over three sets.

The Romanian lost the opening four games, rallied to level the set, but Suarez Navarro eventually clinched it with a huge forehand winner.

Third seed Halep needed only 63 more minutes to take her revenge, though, powering to a 5-7 6-1 6-1 triumph after finishing off with an unstoppable ace.

Serena Williams lies in wait following her hard-fought victory over the in-form Timea Bacsinszky.

The world number one may have needed only an hour and 25 minutes to defeat the Swiss 7-5 6-3 but she was certainly given the runaround by a player who had previously won 15 matches in a row, claiming the Monterrey Open title in the process.