France’s Quentin Halys pulled off one of the biggest upsets of the EFG Swiss Open Gstaad 2026 by defeating top seed and defending champion Alexander Bublik of Kazakhstan 6–7(4), 6–4, 7–6(5) in a thrilling Round of 16 encounter on 17 July at Roy Emerson Arena. The marathon contest, which resumed after rain suspended play the previous day, lasted 2 hours and 22 minutes and earned Halys a place in the quarter-finals.
Bublik edged a tightly contested opening set in a tie-break, taking it 7–6(4) after both players held serve throughout the first set. Halys refused to back down and responded impressively in the second, breaking serve at a crucial stage to level the match with a 6–4 victory.
The deciding set proved just as competitive, with neither player able to create separation. After play resumed following the weather delay, Halys held his nerve in another tie-break, winning it 7–5 to complete a memorable comeback and eliminate the tournament’s top seed. The victory also ended Bublik’s title defence in Gstaad.
Halys’ resilience under pressure was the defining feature of the match, as he recovered after losing the opening set and produced his best tennis in the decisive moments. The Frenchman advanced to the quarter-finals with momentum, while Bublik suffered an early exit despite entering the tournament as the defending champion and No. 1 seed.
Standout Performances
- Quentin Halys (France): Won 6–7(4), 6–4, 7–6(5).
- Alexander Bublik (Kazakhstan): Top seed and defending champion.
- Match Duration: 2 hours 22 minutes.
- Result: Halys advanced to the quarter-finals.
Halys turned the match around by claiming the second set after dropping a tight opener. He then stayed composed in the deciding-set tie-break to complete one of the tournament’s biggest upsets.
Match Statistics
- Tournament: EFG Swiss Open Gstaad (ATP 250)
- Round: Round of 16
- Date: 17 July 2026
- Venue: Roy Emerson Arena, Gstaad, Switzerland
- Winner: Quentin Halys (France)
- Runner-up: Alexander Bublik (Kazakhstan)
- Final Score: 6–7(4), 6–4, 7–6(5)
- Match Duration: 2:22
- Result: Quentin Halys advanced to the quarter-finals.