Jannik Sinner and Carlos Alcaraz, locked in a fierce battle for the ATP's top ranking, kicked off their clay-court campaigns with authoritative performances at the Monte Carlo Masters on Tuesday.
Sinner, the Italian second seed, wasted no time in his season debut on the red dirt, dismantling France's Ugo Humbert 6-3, 6-0 in a mere 64 minutes. The second set was a masterclass, with Sinner conceding only six points. This victory marks his 18th consecutive win at the Masters 1000 level and extends his remarkable streak to 36 straight sets won at that tier of competition.
"I'm going to lose number one in the world. I don't know if it is going to be at this tournament or the next one," Alcaraz stated after his match. "I'm defending a bunch of points that are going to be really difficult to defend. Even if I defend them, Jannik is going to add some points. I will just try to play my best and let's see what happens."
The Spaniard, who has held the world number one ranking since November, began his title defense with a commanding 6-1, 6-3 win over Argentina's Sebastian Baez, a six-time clay-court champion on the ATP Tour. This was Alcaraz's first match on clay since his epic comeback victory over Sinner in the 2025 French Open final, where he rallied from two sets down and saved three championship points to claim his second Roland Garros title.
The gap between the two rivals has now narrowed to 1,190 points as the tour shifts fully to the European clay swing. Sinner faces a unique scenario, having no ranking points to defend until May due to a suspension he served this time last year. To dethrone Alcaraz when the rankings update next Monday, Sinner must at least reach the semi-finals in Monte Carlo and then outperform the defending champion's result.
Both players now look ahead to the third round. Sinner will face Argentina's Francisco Cerundolo, while Alcaraz awaits the winner of the match between Tomas Martin Etcheverry and Terence Atmane. Their parallel paths through the draw set the stage for another potential chapter in their growing rivalry.