Wimbledon opened under sweltering 34 °C conditions that quickly took a toll on several high-profile players. Two-time finalist Ons Jabeur lasted just 26 minutes of her first-round meeting with Bulgaria’s Viktoriya Tomova before calling a medical timeout. After her blood pressure was taken courtside, the 30-year-old Tunisian returned briefly but retired early in the second set, conceding while down 7-6, 2-0. On the men’s side, Stefanos Tsitsipas also withdrew mid-match, ending his campaign while trailing French qualifier Valentin Royer 6-3, 6-2. The Greek former world No. 3 cited a persistent back injury and later admitted he is contemplating stepping away from the sport, saying, “If I see it continue like this, there’s no point in competing.” The abrupt exits capped a bruising opening day that produced additional upsets. Kazakhstan’s Yulia Putintseva failed to win a game in a 6-0, 6-0 loss to American Amanda Anisimova that lasted only 45 minutes, and former world No. 1 Daniil Medvedev fell in four sets to France’s Benjamin Bonzi. Tournament organisers said play would continue as scheduled, but the early retirements and lopsided defeats underscored the combined impact of injuries and an unusual London heatwave on this year’s Championships.