Taylah Preston vs Alina Korneeva — QF — Korea Open

Alina Korneeva beat Taylah Preston in 69 minutes to reach the Korea Open semifinals. The first set hinged on Preston's serve: she won 14 percent of her first-serve points and was broken four times, her only game arriving when she broke back in game 2. Preston, ranked WTA No. 92, had reached the quarterfinals with a round-of-16 win over Jelena Ostapenko, and she was steadier on serve in the second set, winning 67 percent of her first-serve points and breaking back in game 7 for 3-4. Korneeva still took the set 6-4, and she finished with six holds from eight service games and four of six break points saved. Korneeva, 19, is ranked WTA No. 81 after starting the season at No. 210. The betting market had favored her at 72 percent, and the two had no prior meetings on record.