Marin Cilic defeated Zhizhen Zhang 7–6 7–6 in the final of the ATP 250 Hangzhou on hard court, pulling off an upset against the pre-match favourite. Both sets went to tiebreaks, with Cilic converting his opportunities in the decisive moments to claim his first title since 2018. Zhang, competing on home soil, had entered the match as the betting favourite but could not capitalise on that advantage, with the Croatian veteran's experience proving decisive in the closely contested encounters. The victory marks a significant return to form for Cilic, whose ranking and confidence should receive a notable boost from winning an ATP title at 35.