There will be an American in the men's final of the US Open for the first time since 2006 after Frances Tiafoe set up a blockbuster of a semi-final against Taylor Fritz.
Hours after Fritz disposed of fourth seed Alexander Zverev in the quarter-final, Tiafoe followed suit by beating an injured Grigor Dimitrov 6-3 6-7 (5) 6-3 4-1.
It was not the way Tiafoe would have wanted to win as 34-year-old Dimitrov sustained an injury at the end of the third set.
He was barely able to move in the fourth set before he had to retire.
Dimitrov revealed he was disappointed with the outcome, but his overall fitness is his priority.
He said: "I think it’s a combination from everything. Clearly my rehab process is a little bit slower than before. I felt a couple of things in prior the match.
"I think I have enough experience in myself to know where there’s no point to continue any further on that, and I think it’s just simple as that. Do I like doing it? No, but that’s that."
Fritz and Tiafoe will face off on Friday night, guaranteeing a home player in the men’s final since Andy Roddick lost to Roger Federer 18 years ago.
It will also be the first all-American semi-final in a men’s grand slam since 2005.
Now there is a real chance of a home winner in New York for the first time since 21 years ago, with Tiafoe telling the press that beating Dimitrov due to an injury was "not the way he wanted to get through".
"But, I’m happy to get through. Another semi-final here. Incredible," he said.
"It was a really high-level match, I liked where I was at in the third regardless, but I didn’t want to end it like that."
He added: "But you get to see me against another American so Friday is going to be one hell of a day."
He called Friday’s match the "biggest" of both his and Fritz’s life.
"We have known each other for so long, we have played against each other since we were 14," he said.
"To play him here in the biggest arena, in one of the biggest matches in the world, is going to be awesome.
"I can’t be more excited, I am going to give it everything I have got."
Fritz earlier ended his quarter-final hoodoo by reaching the last four.
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