No. 1 Sinner dodges upset bug, coasts at US Open

In the wake of upset losses by No. 3 Carlos Alcaraz and No. 2 Novak Djokovic, men's world No. 1 Jannik Sinner advanced comfortably into the second week of the US Open on Saturday.

Sinner enjoyed a businesslike 6-1, 6-4, 6-2 win over Australia's Christopher O'Connell to reach the round of 16, where he awaits the winner of Gabriel Diallo and Tommy Paul.

Sinner ensured that dubious history was not made Saturday at Flushing Meadows; since the start of the Open era in 1968, there has never been a US Open without any of the men's top-three seeds in the round of 16.

"Everything can happen in this sport," Sinner said in his on-court interview. "I try to stay on my side of the net and take it day by day. ... Very happy to be still here and hopefully I can play as many matches as possible."

In the first men's match Saturday, Tomas Machac won 6-3, 6-1, 6-2 against David Goffin and moved into the fourth round at a major for the first time.

Meanwhile, unseeded Botic Van de Zandschulp, who knocked out Alcaraz in the second round, lost to Britain's Jack Draper 6-3, 6-4, 6-2.

ESPN Stats & Information contributed to this report.