Alexander Bublik defeated Arthur Cazaux 6–1, 7–5 in the semi-final of the ATP 250 event at Gstaad on clay on 19 July 2025, confirming his status as pre-match favourite with odds of 1.38 to Cazaux's 3.31. Bublik's dominance was evident in the opening set, which he claimed with a decisive 6–1 scoreline, though Cazaux mounted greater resistance in the second, forcing a competitive tie-break scenario before succumbing 7–5. The victory propels Bublik into the final and extends his winning record at the Swiss resort, whilst Cazaux's semi-final exit marks the limit of his run in Gstaad.