Why Is Carlos Alcaraz Suddenly the Favorite at the US Open 2026?

Carlos Alcaraz is back in New York — and the US Open 2026 could not have opened up better for the defending champion. 

After spending around four months away from competitive tennis because of a wrist injury, Alcaraz has confirmed his return to the US Open. Meanwhile, world No. 1 Jannik Sinner has withdrawn from the tournament because of a knee injury, dramatically changing the men's singles picture.

Alcaraz Has a Huge Opportunity

Sinner's absence immediately puts more attention on Alcaraz.

The Spaniard is returning as the defending US Open champion, and with one of his biggest rivals missing, expectations around him have increased significantly.

But there is one major question:

Can Alcaraz return from injury and immediately play at his best level?

He has not competed for several months, so the biggest challenge may be finding his rhythm under Grand Slam pressure.

Alcaraz Is Already Back in New York

Alcaraz has been seen practicing at the US Open site during Fan Week as he prepares for his singles campaign. Official US Open coverage showed the Spaniard back on court Monday, August 24.

And there is another reason fans are excited.

Alcaraz will also team up with Serena Williams in the US Open Mixed Doubles Championship, giving fans an unexpected blockbuster partnership before the singles tournament begins.

Can Alcaraz Defend His Title?

That is the big question heading into New York.

With Sinner out, Alcaraz has a major opportunity to strengthen his position as one of the biggest stars in men's tennis. But a long injury layoff can make a Grand Slam comeback extremely difficult.

If Alcaraz can rediscover his best tennis quickly, US Open 2026 could become another unforgettable chapter in his career.

And with the world's No. 1 absent, everyone will be watching one man even more closely:

Carlos Alcaraz. 👀🏆