"Sinner urgently needs to improve his serve," Becker disappointed by the Italian's performance in the US Open final

Boris Becker did not hold back with his criticism of former world number one Jannik Sinner. Disappointed by his performance in the US Open final against Alcaraz, the German explained why on the "Becker Petkovic podcast."
"I'm an honest person. I was a bit disappointed. I expected better. For the first time, Sinner seemed stuck in his game. He has become predictable now. We know exactly what's going to happen, and Alcaraz knows it too.
For the first time, the Spaniard truly took a step forward, while the Italian remained the same. He didn't know how to win points. Nevertheless, he was very clear-headed after the match, and I thought that was great.
Moreover, his coaches (Cahill and Vagnozzi) will find a solution and improve his game. But he urgently needs to improve his serve. There were two different worlds in that final: the one where Sinner was serving and the one where Alcaraz was serving."
For context, Sinner lost in four sets (6-2, 3-6, 6-1, 6-4), posting a very low serving percentage (48% first serves compared to 61% for the Spaniard).