Winston-Salem (US), Aug 27 (AP) Ilya Ivashka, Emil Ruusuvuori and Mikael Ymer all took down seeded opponents - including No. 1 Pablo Carreno Busta - in the quarterfinals of the Winston-Salem Open.

Ivashka beat Carreno Busta 7-6 (2), 6-3, upending the world's 12th-ranked player. That sent the 27-year-old from Belarus into Friday's semifinals to face Russuvuori, a 22-year-old from Finland who beat 14th-seeded Richard Gasquet 7-6 (5), 6-1.

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The winner of that semifinal will reach their first ATP Tour hard-court final.

Ymer followed by beating 13th-seeded Frances Tiafoe 6-7 (2), 6-2, 6-3 in the first night quarterfinal. He'll face 15th-seeded Carlos Alcaraz, who became the only seeded player to win Thursday by beating Marcos Giron 7-6 (2), 6-2 in the day's final match.

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Ivashka, ranked No. 63 in the world, twice converted break-point opportunities while holding serve throughout the match against Carreno Busta, a U.S. Open semifinalist in 2017.

Ruusuvuori beat Gasquet - a three-time Grand Slam semifinalist - to claim his fourth straight-set win in five tournament matches.

Ymer's win came after he broke Tiafoe's serve three times in the third set, ending the 23-year-old American's run that had included a second-round win against Andy Murray.

Alcaraz also broke serve three times in his final set, including the final game.

The hard-court tournament is a tuneup for the U.S. Open, the year's last Grand Slam tournament, which starts Monday in New York. (AP)

(The above story is verified and authored by Press Trust of India (PTI) staff. PTI, India’s premier news agency, employs more than 400 journalists and 500 stringers to cover almost every district and small town in India.. The views appearing in the above post do not reflect the opinions of LatestLY)