Sublime Sinner secures safe passage at US Open as Swiatek rolls on

Italy’s Jannik Sinner in action during his third round match against Australia’s Christopher O’Connell Saturday in Flushing Meadows, New York. (REUTERS/Eduardo Munoz)

(Reuters) -Jannik Sinner avoided the fate of his top rivals, reaching the fourth round of the U.S. Open while fellow top seed Iga Swiatek gained momentum in her quest for a sixth Grand Slam title after a pep talk from Serena Williams on Saturday.