SESTO PUSTERIA - Jannik Sinner is celebrating his 25th birthday. The world No. 1, born on August 16, 2021, won his 30th Wimbledon title, the fifth Grand Slam of his career, and is now aiming for the US Open. All he needs to do is win Roland Garros, his goal for 2027. Meanwhile, he has spent almost the last two and a half years at the top of the ATP rankings, where he returned in April 2026. The latest rankings see him firmly in the lead with 13,450 points, culminating in Sinner's 84th week as world No. 1, who sits first with 13,450 points.…