Nick Kyrgios is through to the fourth round of the Miami Masters after a clinical straight sets defeat of American qualifier Tim Smyczek.
Kyrgios, who is yet to drop a set in Miami, beat the world No.132 6-4 6-4, the Australian sending down nine aces in the win.
It sets up a fourth round match against Russian Andrey Kuznetsov, who backed up his straight sets upset of fourth seed Stan Wawrinka by beating Frenchman Adrian Mannarino 2-6 7-5 6-0.
Earlier, Andy Murray – a two-time Miami Masters champion – was derailed in the third round, falling 6-7 (1-7) 6-4 6-3 to Bulgarian Grigor Dimitrov.
The Scotsman might have sensed trouble was in the air at Crandon Park after the opening two matches on Stadium court ended in shock results with women’s world No.1 Serena Williams and No.2 Agnieszka Radwanska both upset victims.
After winning a tight opening set by breezing through a 7-1 tie-break, Murray quickly found himself down 4-0 in the second set.
Murray grabbed the initiative in the third set, breaking his Bulgarian opponent to nose ahead 3-1, but a determined Dimitrov won the final four games to take the match.
In other men’s action, sixth seed Kei Nishikori eased into the fourth round past Ukraine’s Alexander Dolgopolov 6-2 6-2, while ninth-seeded Frenchman Jo-Wilfried Tsonga was shown the Crandon Park exit by Spaniard Roberto Bautista Agut 2-6 6-3 7-6 (7-3).