Japan's Naomi Osaka came from a set down to beat Victoria Azarenka of Belarus to win the US Open and clinch her third grand slam title.

Osaka, the fourth seed, overcame her unseeded opponent 1-6, 6-3, 6-3 inside a near-empty Arthur Ashe stadium at flushing meadows.

It brought 22 year old Osaka's haul of tennis major trophies to three after her victories at the 2018 us open and 2019 Australian Open.

Azarenka, 31, sprinted to the first set in just 26 minutes, dominating Osaka with an 88 percent success rate on her first serve.

The Japanese was uncharacteristically sloppy, hitting a whopping 13 unforced errors.

Azarenka then went 2-0 ahead in the second set before Osaka fought back to break her opponent's serve twice and take a 4-3 lead.

The momentum had quickly swung in Osaka's favor and she broke a third time to take the match to a deciding set.

The match was watched by just a few dozen people, mostly officials, journalists and event staff after the Coronavirus pandemic forced the tournament to be held behind closed doors.