It was a day of upsets at the Delray Beach Open in Florida on Wednesday as some of the big names suffered shock exits.
Wildcard, Reilly Opelka, ranked 228th in the world, stunned top seed and defending champion Jack Sock 4-6, 7-5, 6-3 to reach the quarter-finals of the ATP tournament in Delray Beach, Florida.
The 6-foot-11-inch Opelka used his height and power to fire down 17 aces, though the 20-year-old was not really happy with his biggest weapon.
“I didn’t serve as well as I’d have liked to or as well as I usually do,” the world number 228 said after the biggest win of his career.
World number eight Sock spoke of the difficulty of playing against someone of Opelka’s height.
“You’re not really ever in control against a seven-foot guy who can serve you off the court,” he said.
“Even after winning the first set it’s still 50-50 with his style of play.”
In the other match, Milos Raonic was well beaten as he got outplayed 6-2 6-4 by American Steve Johnson, who earned his first ever victory over the Canadian.
On his performance, Raonic said, “I’ve got to definitely review it, think about it, because that was a pretty poor level I put out there today,” he said.
“Not much to be happy with. I had a tough time with a lot of things today.”
In another shocker, America’s John Isner came out on the wrong end of three consecutive tie-breaks against German Peter Gojowczyk, who prevailed 7-6(3) 6-7(4) 7-6(5).
Thirty aces were not enough for Isner in a match that did not feature a service break.
Second-seeded Juan Martin del Potro will try to book his quarter-final berth on Thursday, taking on American Frances Tiafoe, while Eighth-seeded Chung Hyeon of South Korea faces Croatian qualifier Franko Skugor for a place in the last eight.