Petra Kvitová was surprisingly eliminated in the fourth round of the US Open on Sunday.
The sixth-placed Czech went down in a thriller against the American Shelby Rogers.
Alexander Zverev did reach the quarter finals in the men.
Kvitová lost 6-7 (5), 6-3 and 6-7 (6) to Rogers, the number 93 in the world.
The two-time Grand Slam winner lost no less than four match points in the deciding set.
In the tenth game, Kvitová failed to finish three times on Rogers' service and in the tiebreak she also left a match point unused.
The American did hit her first match point and reached the quarterfinals of the US Open for the first time in her career.
Kvitová twice won Wimbledon, but never got further than the quarterfinals in New York.
Last year, the global number twelve already stranded in the second round.
Earlier in the evening, the curtain also fell for Angelique Kerber, who lost in two sets to the American Jennifer Brady: 6-1 and 6-4.
The 32-year-old German won the US Open in 2016, but never got further than the third round.
Alexander Zverev awarded his opponent only five games. (Photo: Getty Images)
Alexander Zverev awarded his opponent only five games.
(Photo: Getty Images)
Zverev for the first time to quarterfinals
In the men, Zverev needed an hour and a half to beat 21-year-old Alejandro Davidovich Fokina: 6-2, 6-2 and 6-1.
The number five on the placement list did not take a single break against the Spanish talent, who requested a medical time-out at the start of the third set.
It is the first time this US Open that Zverev has won a match without a set loss.
In the first three rounds against Kevin Anderson, Brandon Nakashima and Adrian Mannarino, he won 'only' after a four-setter.
In the quarterfinals, 23-year-old Zverev awaits a showdown with the Croat Borna Coric (ATP-32) or the Australian Jordan Thompson (ATP-63), who will play against each other later in the evening.
Zverev, an outsider for the US Open title, has never reached the final of a Grand Slam tournament in his career.
At Flushing Meadows, he never got further than the eighth finals (2019) until this year.