David Goffin produced an Indian Wells upset by beating Stan Wawrinka 6-3, 5-7, 7-6(5) before declaring it the ‘best win of his career’.
The 25-year-old Belgian was coming off a 14-match losing streak against players ranked in the top ten, but he overcame searing temperatures of 91 degrees Fahrenheit in California to book a place in the quarter-finals.
"It was the best win of my career, for sure," Goffin told reporters. "I had some problems with my serve, a little bit with my toss.
"It was tough with the heat and the sun to control the ball. I was struggling with my serve and it was difficult.
"In the third, it's tough to fight again with the heat and with the level of Stan. The tiebreaker is like you flip a coin."
The two-and-a-half hour epic featured a staggering 13 breaks of serve, with world number four Wawrinka cursing himself for making too many mistakes – including a wildly wayward smash that gave Goffin the decisive match point in the third-set tiebreak.
"[It] was a match without a brain, let's put it that way," Wawrinka fumed. "If you want to win matches, you need to stay focused."
Goffin will meet big-serving tenth-seed Marin Cilic in the quarter-final, after the Croat beat Frenchman Richard Gasquet 7-5, 5-7, 6-2.