Birthday boy Shelton and top seed Zverev advance at Shanghai Masters

U.S. Open runner-up Ben Shelton celebrated his 24th birthday Friday by advancing to the third round of the Shanghai Masters with a 6-3, 7-6 (6) win over Daniel Altmaier in the ATP 1000-level tournament.Shelton played Davis Cup for the United States after the U.S. Open, losing both his singles matches, after withdrawing from the Laver Cup team event.Top-seeded Alexander Zverev, who beat Shelton in the final in four sets at Flushing Meadows, beat Chinese wild-card entry Wu Yibing 6-4, 7-6 (4).Novak Djokovic, who won the China Open on Tuesday for a 102nd career title, was scheduled to play a night match against Hubert Hurkacz. Ninth-seeded Alex de Minaur advanced on a walkover when his opponent, Alex Molcan, retired with an undisclosed ailment. De Minaur had to retire with an adductor injury in the China Open final against Djokovic.Qualifier Rei Sakamoto beat 23rd-seeded Andrey Rublev 6-4, 6-4.No. 1 Jannik Sinner withdrew from Shanghai this week when he announced he was taking the rest of