Jannik Sinner extended his perfect record at the 2025 ATP Finals with a composed and powerful victory over American star Ben Shelton.  The Italian, who has become one of the sport’s most consistent performers in the last two seasons, demonstrated maturity, tactical discipline, and the explosive shot-making that defined his breakout years on tour.

Sinner entered the match with a perfect record in the group stage, having already secured earlier victories that positioned him as one of the favorites to reach — and possibly win — the semifinals.  Sinner had to be sharp right away against Shelton, a charismatic and hard-hitting player with one of the biggest serves on the ATP Tour.  And he was.

A Strong Start and Tactical Edge

From the opening game, Sinner read Shelton’s serve with impressive precision.  While many players struggled with the American’s pace and left-handed angles, Sinner remained deep behind the baseline, absorbing and redirecting power with ease.  Shelton’s return game, one of the most underappreciated aspects of his toolkit, immediately put him under pressure.

Shelton, for his part, came out swinging.  He delivered his usual combination of powerful first serves, inside-out forehands, and aggressive net approaches.  However, Sinner’s ability to counterpunch effectively and remain composed during lengthy rallies made the difference.  The Italian never hesitated when it came to key break-point opportunities.

Sinner won the first set with clinical efficiency, using only one break of serve and maintaining a first-serve percentage that prevented Shelton from gaining rhythm in the return games.

Shelton Fights, But Sinner Stays in Control

The second set was more dramatic, as Shelton raised his game, forcing Sinner into deeper rallies and finding more success at the net.  The American’s fearless energy has made him one of the most exciting young players to watch, forcing Sinner to make spectacular passes just to stay in the game.

But Sinner’s biggest weapon turned out to be his patience.

Rather than forcing winners, the Italian employed strategic court placement, combining high-percentage shots with well-timed aggression.  His inside-in forehand repeatedly caught Shelton off guard, and his backhand — long regarded as one of the cleanest on tour — provided consistent depth, preventing Shelton from dictating play.

Sinner demonstrated the poise of a seasoned champion as the set progressed to its conclusion.  He saved break points with brave shot selections and took advantage of Shelton’s few errors at critical moments.  Finally, he won the match in straight sets, continuing his undefeated run in the tournament.

A Sign of Sinner’s Evolution

Sinner’s performance was most notable for his mental and tactical development, rather than his shot quality.

Just two seasons ago, he faced more challenges from big servers and unpredictable shot-makers.  He now navigates them with calm, surgical confidence.  His serve, which was once a relative weakness, has evolved into a reliable weapon.  His movement has improved.  And his decision-making under pressure has propelled him to the sport’s elite level.

Sinner’s win over Shelton was more than just another group-stage victory; it demonstrated that he has evolved into a complete, well-rounded competitor capable of winning ATP Finals and even Grand Slams.

Shelton’s Bright Future Remains Intact

Although Shelton was unable to overcome Sinner’s consistency, the American remains one of the ATP Tour’s top young players.  His serve is still one of the most dangerous in tennis, and his fearless approach makes him a threat on any surface.

 Shelton sees matches like this as valuable learning opportunities.  Sinner, after all, only rose to prominence after facing off against Novak Djokovic and Daniil Medvedev.  Shelton’s future remains incredibly bright.

What’s Next for Sinner?

Sinner remains unbeaten and confidently advances to the next round of the ATP Finals.  His form suggests that he is aiming for more than just a spot in the semifinals—the championship itself.

If he maintains his current level, the Italian could finish the season as one of the most dominant players on the tour.