Madison Keys Praises Jannik Sinner’s Serve After Wimbledon 2026 Win

Madison Keys and Jessica Pegula were left stunned by Jannik Sinner’s dominant serve at the 2026 Wimbledon Championships. The Italian defended his title with a 6-7(7), 7-6(2), 6-3, 6-4 win over Alexander Zverev, showcasing an improved serve that left even top players in awe.

What impressed Keys and Pegula?

Keys revealed that Sinner’s coach, Darren Cahill, encouraged him to model his serve after John Isner’s. The American praised Sinner’s willingness to refine his game despite already being at the top.

'I thought it was pretty crazy because I think I heard Darren talking about it when he first started with Jannik and one of the big things was like we need to improve your serve,' Keys said.

Why did Sinner focus on his serve?

Sinner’s serve became a weapon after he studied Isner’s technique. Keys noted how rare it is for a top player to make such adjustments mid-career.

'The fact that he’s like, ‘Yeah, okay. No problem,’ is just incredible,' Keys added. Pegula called Sinner’s wide serve on the ad side 'insane,' saying it felt like an ace every time.

What’s next for Sinner?

After his Wimbledon triumph, Sinner emphasized the importance of his serve in high-pressure moments. His ability to hold serve 87 consecutive times against Zverev proved decisive.

Isner joked about Sinner’s newfound power, saying, 'Serving like me with an actual baseline game is a decent combo.'