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Naomi Osaka, of Japan, reacts during her match against Aryna Sabalenka, of Belarus. Image Credit: AP

New York: Japan’s Naomi Osaka reached her first Grand Slam quarter-final at the US Open on Monday, tearfully admitting she was prepared to “break a leg” to win the match.

The 20-year-old defeated Aryna Sabalenka of Belarus 6-3, 2-6, 6-4 to become the first Japanese woman in the US Open quarter-finals since Shinobu Asagoe in 2004.

Osaka, seeded 20, came back from a break down in the final set to take the tie on a fourth match point when Sabalenka served up an eighth double fault.

“I would never have forgiven myself if I had lost that match today,” said a tearful Osaka.

“When I was a break down in the final set I thought I would even break a leg if needed so I could get to every ball.”

Next up for Osaka is a clash against either 19-year-old Marketa Vondrousova, the world 103, or Ukraine’s 36th-ranked Lesia Tsurenko who knocked out second seed Caroline Wozniacki.