Supporters of American men’s tennis, meet your latest grand slam hope: Chris Eubanks.

The unheralded 27-year-old Atlanta native shocked No. 5 seed Stefanos Tsitsipas on Monday in five gripping sets — 3-6, 7-6, 3-6, 6-4, 6-4 — to reach the quarterfinals of Wimbledon and alter the trajectory of his career.

It was the first top-10 victory of Eubanks’ career.

He will face No. 3 Daniil Medvedev in the quarters.

The breakthrough, which Eubanks described as “absolutely insane”, followed losses earlier at Wimbledon by the usual would-be American contenders: Taylor Fritz lost in Round 2, and Frances Tiafoe fell in Round 3.

Less pre-tournament attention was on Eubanks, who rose to a career-best ranking of No. 43 when he won a grass-court tournament in Mallorca, Spain, in the run-up to Wimbledon for his first ATP Tour title.

At the All-England Club, he dispatched Brazil’s Thiago Monteiro in the first round, upset No. 12 Cam Norrie of Great Britain in the second round and blew past Australia’s Christopher O’Connell in the third round to set up the fourth-round clash with Tsitsipas.

Eubanks was a two-time NCAA All-American at Georgia Tech.