Kei Nishikori was on the wrong side of an Indian Wells upset after Pole Hubert Hurkacz sent him packing in California.
The Japanese star had started the year well, but had little reply to Hurkacz’s 10 aces en route to an impressive 4-6, 6-4, 6-3 win.
“Kei is an unbelievable player, so I’m very happy to be able to win against him,” said Hurkacz.
“He’s a great competitor. Was really tough, tough match today. I was trying to stay positive, to fight for every point and it worked out at the end.
“I was just trying to serve well. This was helping me to get a few free points. Against such a great player, it’s really crucial.”
Hurkacz will now face Denis Shapovalov in round four, who scored an impressive win over Marin Cilic.
Elsewhere, Daniil Medvedev was also a surprise casualty as the Russian sank to dismal 6-2, 6-2 defeat to Serbia’s world number 113 Filip Krajinovic.
Krajinovic’s reward will be a meeting with Rafael Nadal, who was far too good for Diego Schwartzman.
David Ferrer sends Alexander Zverev packing.
Roger Federer gets himself out of of a spot of bother.
Early end to Miami Open for Serena Williams.
LTA determined to open up access to tennis.
It’s a star-studded Saturday in Miami.
Strong WTA field emerging in Miami.
Thiem fails to make Sunshine Double challenge.
Williams admits to digging deep.
Serb cruises into round three.
Who can you see and when on Friday?