Will Carlos Alcaraz be able to catch Jannik Sinner as world number 1 for weeks? | ATP tour | Tennis

PIF ATP Live Rankings Projection

Will Alcaraz catch Sinner as number 1 in the world for weeks?

Alcaraz leads Sinner with 2,850 points in the PIF ATP rankings
February 16, 2026

The battle for No. 1 in the PIF ATP Rankings has become a two-man chess match between Carlos Alcaraz and Jannik Sinner in recent years, and at this point every move could have major consequences.

Now that he has spent a total of 59 weeks at No. 1, Alcaraz breaks his tie with Jim Courier for 13th on the all-time list and moves closer to Sinner at 66 weeks. What was last year’s era of Sinner at the top has quickly evolved into a back-and-forth battle that feels emblematic of the sport’s present and future.

Total number of weeks at number 1 in the PIF ATP rankings

Just a year ago, Sinner was in the midst of an imperious debut spell at No. 1, becoming the fifth player to spend more than a year at the top during his first reign. But Alcaraz has responded emphatically.

The 22-year-old Spaniard reclaimed top spot with his US Open victory over Sinner in September and confirmed it with his Australian Open title in January, becoming the youngest man to complete the Career Grand Slam. Alcaraz now has a 2,850 points lead over Sinner at the top of the PIF ATP Live Rankings.

Both Alcaraz and Sinner will headline the ATP 500 field this week at the Qatar ExxonMobil Open, as Sinner looks to gain ground in the battle for No. 1 on his debut in Doha. The 24-year-old Italian has no points to defend until the swing on the clay in Rome and it is a play that gives him the freedom to attack without immediate pressure.

It is important that the immediate period does not entail an overwhelming burden of points for the Alcaraz. He defends a quarter-final in Doha, a semi-final in Indian Wells and a second-round result in Miami before the calendar shifts to clay, where his bigger victories begin with the Monte Carlo title and a second-place finish in Barcelona.

Beyond the numbers, the rivalry between Alcaraz and Sinner has come to define the story of the ATP Tour, with the Spaniard leading the Lexus ATP Head2Head series 10-6. The two could reignite their rivalry for the first time since the Nitto ATP Finals in November if they both reach the championship match in Doha this week.

For now, the gap in the battle for No. 1 is Alcaraz’s to protect and Sinner’s to chase. Twelve months ago the picture looked very different. With no one between them on the all-time list and both running deep in the season’s biggest events, the race for No. 1 feels less like a changing of the guard and more like a rivalry destined to define an era.

If Alcaraz maintains his grip on the PIF ATP rankings, he could overtake Sinner at No. 1 for weeks as the Tour enters the clay-court season in early April after the Sunshine Double in Indian Wells and Miami.