Zverev tames Beijing champ to reach Shanghai last 16
Zverev, who departed the Beijing hard courts by smashing his racquet, kept his cool this time to beat Basilashvili in 92 cagey minutes.
Zverev, who said that he had a sore throat and blocked nose, will play Australia’s world No.33 Alex de Minaur next.
De Minaur, 19, defeated France’s Benoit Paire 6-4, 6-3 to enhance his growing reputation.
Zverev said that Basilashvili, who is up to a career-high ranking of 23rd, “knows how to play, definitely.”
The 30-year-old Argentine Del Potro outlasted stubborn Frenchman Richard Gasquet to stay in the hunt at the Masters event.
Del Potro, who similarly suffered with cold and flu in the China Open final, was broken on his service to immediately go a game down.
But under pressure from the 32-year-old Gasquet, the third seed belatedly found his rhythm, coming from behind in both sets to win 7-5, 7-6 (9/7).
Del Potro, who sealed the match with an ace and a swing of his fist, will face 13th seed Borna Coric of Croatia next.
Alexander Zverev hits a return to Nikoloz Basilashvili during their men’s singles first-round match at the Shanghai Masters on Wednesday.