GSTAAD, Switzerland (Reuters) – Unseeded Ignacio Buse stunned world No. 11 Stefanos Tsitsipas in the first round of the 2026 EFG Swiss Open Gstaad on Tuesday. The 20-year-old Peruvian qualifier won 7-6, 6-4, marking the biggest victory of his nascent career.
Buse’s aggressive baseline play overwhelmed Tsitsipas from the outset. The Greek star committed 34 unforced errors across two sets. The first set tiebreak was decisive: Buse won it 7-4 after Tsitsipas double-faulted on set point. Sky Sports live stream captured the full sequence, with Buse breaking Tsitsipas’s serve in the ninth game of the second set to seal the win.
Pre-match betting odds from FanDuel reflected the disparity. Tsitsipas opened as a -450 moneyline favorite, while Buse was a +340 underdog. The upset represents a significant market inefficiency for futures bettors. Updated lines now list Buse at +800 to win the tournament, according to FanDuel’s popular odds page.
The Swiss Open Gstaad schedule for Tuesday, July 14, as detailed by Bleacher Nation, features four first-round matches on Centre Court. Buse’s victory was the day’s only upset. Full matchups and TV/live stream info are available via Sky Sports and streaming platforms.
Ignacio Buse entered the tournament ranked No. 198 in the ATP standings. His playing style combines a heavy topspin forehand with exceptional court coverage. Prior to Gstaad, his best result was a Challenger final in Lima in April. This win is his first against a top-20 opponent.
For Tsitsipas, the loss compounds recent struggles on clay. He has now lost three of his last five matches on the surface. The early exit in Gstaad could affect his seeding for the US Open, where he is currently projected as the No. 7 seed.
The draw opens for Buse. He will face qualifier Matteo Arnaldi in the second round. Arnaldi is ranked No. 56 but has a losing record on clay this season. Updated tournament lines suggest Buse has a viable path to the quarterfinals, where he could meet sixth seed Arthur Fils.
The match highlights are available on Sky Sports. Buse’s rise adds fresh narrative to the ATP clay season. His next match is scheduled for Thursday.
💡 Frequently Asked Questions (FAQ)
- Q: Who is Ignacio Buse?
- A: Ignacio Buse is a 20-year-old Peruvian tennis player who entered the 2026 Swiss Open Gstaad as a qualifier ranked No. 198 in the ATP standings.
- Q: How did Ignacio Buse beat Stefanos Tsitsipas?
- A: Buse won 7-6, 6-4 through aggressive baseline play, capitalizing on Tsitsipas’s 34 unforced errors and winning a decisive first-set tiebreak 7-4 after a double fault on set point.
- Q: What was the betting odds for the match?
- A: Tsitsipas was a -450 moneyline favorite, while Buse was a +340 underdog. After the win, Buse’s tournament odds shifted to +800 on FanDuel.
- Q: What is Ignacio Buse’s best result before this win?
- A: Prior to Gstaad, his best result was a Challenger final in Lima in April. This victory is his first against a top-20 opponent.
Extended Reading
Sky Sports provided live coverage of the match and post-match interviews. FanDuel continues to update odds for all remaining Swiss Open Gstaad matches. Bleacher Nation’s schedule page includes updated streaming links.