Polona Hercog defeated Kateřina Siniaková 6–4, 6–2 in the first round of the WTA 250 event in Moscow on a hard court. Hercog's victory represented an upset, as Siniaková entered the match as the pre-match favourite at odds of 1.67 to Hercog's 2.33. The Slovenian's commanding performance in the second set, which she won 6–2, proved decisive in securing passage to the next round. The result marks a notable scalp for Hercog in the tournament's early stages.