Carlos Alcaraz says he isn’t concerned about Joao Fonseca despite showing against Jannik Sinner

Joao Fonseca lost to Jannik Sinner, 6-7, 6-7, in the fourth round of Indian Wells. Fonseca came close to pulling off a surprise result against Sinner, and even in defeat, he managed to show why so many people are excited about his potential.

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https://sports.yahoo.com/articles/carlos-alcaraz-says-isn-t-201902201.html