On January 15, Beijing time, the fourth match day of the 2025 Australian Open tennis tournament kicked off, and the second round of singles was contested. In the opening match at John Kane Stadium, last year's Women's Singles runner-up and fifth seed Zheng Qinwen of China lost 6-7(3)/3-6 to Germany's Sigmund and unfortunately lost to the second round.

The two players had never played each other before, but there was no doubt before the game that Zheng Qinwen was the more favored side. At the beginning of the match, although the two sides got each other's break points in the first 8 games, they all resolved them one by one; In the ninth game, Zheng Qinwen was the first to suffer a break, and then she also broke her opponent's serve to win the set. In the first set, Zheng Qinwen led 3-2 in a small score, and then lost two consecutive service points to send a set point, and finally lost four points in a row to lose the first set 6-7 (3). In the second set, Zheng Qinwen suffered a break in the opening set, and although she then completed the breakback, the side that served later was never able to complete the hold to tie the score. In the end, Sigmund maintained his advantage until the end, eliminating Zheng Qinwen 7-6(3)/6-3 to reach the round of 32.

This is the fourth time in Zheng Qinwen's career to play in the main draw of the Australian Open, except for last year's runner-up, the rest of the three years have stopped in the second round of the women's singles, and she has also become the first top eight seeds in the women's singles to go out of this tournament.

Sigmund had a 4-13 record against a top-5 player, with all four victories coming at the WTA Stuttgart, the first time she had beaten a top-5 player on hard court. At the same time, the victory also equalled Sigmund's best record at the Australian Open, having previously reached the third round in 2016 and 2023.

(Text and editor: Dato)