Comparative statistics between the 2025 US Open and the 2026 Indian Wells and Miami Open tournaments, show a clear improvement in Jannik Sinner's serve. At the US Open, Sinner averaged 6.6 aces and 2.7 double faults per match, with a 55.9% first serve and 80.3% points won with the first serve. However, in Indian Wells and Miami, the figures rose to 10.1 aces and 1.2 double faults, with a 67.3% first serve and 85.8% points won with the first serve. This increase in serving effectiveness has led Sinner to a prominent position in the 'Serve Rating' ranking, surpassing other great players.
Roddick's analysis also included the statistics of the 2025 US Open final, where Sinner faced Carlos Alcaraz. In that match, Sinner achieved only 2 aces and committed 4 double faults, with a 48% first serve and 69% points won with the first serve, while Alcaraz made 10 aces and no double faults, with a 61% first serve and 83% points won with the first serve. Roddick stressed that, if Sinner maintains this level of service, he will be a difficult opponent to beat on hard courts, although he acknowledged that on clay his performance could vary.