After almost a month-long break following the Wimbledon triumph, Jannik Sinner came back to action at the Cincinnati Open. He faced Colombia’s Daniel Elahi Galán in the first match, winning it with a dominant 6-1, 6-1. Yet, the Italian was far from pleased. Instead, he pointed out three aspects that could make a “big difference” in his journey to improvement. And at the top of that list was something you’d least expect—evident from the player’s displeased reaction despite beating Gabriel Diallo by 6-2,7-6(5) to move to the last 16.

Well, it all came down to serves. Sinner reportedly hit only 6 aces vs Diallo, but committed 5 double faults. Frustrated, the Italian player then headed straight to the practice court at 10 pm and hit about 100 serves, even prompting former pro, Paolo Ber

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