Qinwen Zheng defeated Anna Kalinskaya in the round of 64 at the WTA 1000 event in Beijing, 6-7(4) 6-4 3-0, and moved into the next round. According to api.tennis, the match ended with Kalinskaya retiring.
From a tiebreak to the deciding set
The opening set went to Kalinskaya, with the set decided in a tiebreak, 6-7(4) for Zheng. In the second set, Zheng responded with a 6-4 win.
In the deciding set, Zheng led 3-0. That was the end of the match: Kalinskaya retired, and the victory went to Zheng.
In the previous round of the Beijing tournament, Zheng defeated Han Shi 7-6(6) 4-6 6-2. Both matches on her draw path went to a deciding set.