Carlos Alcaraz has hit his first rough patch of the 2026 season, suffering back-to-back setbacks at the Sunshine Double. The Spaniard's 6-3, 5-7, 6-4 loss to Sebastian Korda in the Miami Open has left him with a 5-2 record across the two Masters events and 17-2 overall this season.
The bigger concern lies in its impact on the World No. 1 race, where Alcaraz may have handed Jannik Sinner a crucial opening. Sinner, fresh off his maiden Indian Wells title, remains alive in Miami and could slash the deficit to just 1,240 points if he lifts his third consecutive ATP Masters 1000 crown.
Alcaraz still holds a commanding 2,140-point lead over Sinner in the Live Rankings, but the gap is far from secure. The real threat to Alcaraz's No. 1 ranking lies ahead, with the upcoming European clay swing set to decide everything.
Across the next two months, Alcaraz will be defending a massive 4,300 points, including titles at Monte Carlo, Rome and French Open, along with a runner-up finish in Barcelona. Sinner, on the other hand, faces far less pressure, with only 1,850 points to defend.
One milestone secured, for now, Alcaraz is guaranteed to match Sinner's milestone of 66 weeks as World No. 1 in early April, a testament to his dominance over the past year. But for the first time this season, the grip at the top looks vulnerable, and the battle for World No. 1 may just be entering its most decisive phase yet.
