South Korean Kim Bi-o kneeled and apologised after verdict was delivered.
Victor Perez made the most of Matthew Southgate's slip-up by making a tap-in par at the final hole to become the first Frenchman to win the event.
The 15-time Major winner says his knee was sore after a practice round but is excited he can get back into shape.
WTA Hong Kong Open already postponed, horse racing meeting cancelled for safety reasons.
Willett's victory marks a turnaround, after slipping to 462nd in world rankings.
Willett and Rahm say they just want to play good golf.
Danny Willett says he and Jon Rahm hit a lot of good shots with mid-range putts.
Rory McIlroy had a bright start but struggled on the back 9.
Japan tournament with special in-match challenges and surprises also features Rory McIlroy, Jason Day and Hideki Matsuyama.
Suzann Pettersen has been a professional for 18 years, winning the Europe rookie of the year title in 2001 and then going on to win 23 times, including two majors.
Joaquin Niemann is the youngest international winner on the Tour since 1923 and the first third-round leader to hold on and claim this event.
Joaquin Niemann had three birdies and his first bogey of the week to emerge with a 15-under par total of 195.
Defending champions US need 14 points to retain the Solheim Cup while Europe must score 14-1/2 to win the title for the first time since 2013.
Europe are still one point ahead after the second day of the Solheim Cup.
Team Europe are well placed going into day 2 of the Solheim Cup.
Kevin Chappell says his ball striking was good and the putts are really easy to read.
It remains unclear if Tiger Woods will name himself to play when he makes his four captain's picks for the US team on Nov 4.
The hole-in-one helped Im Sung-jae to a four-under 66 that left him four shots behind American leader Robby Shelton in White Sulphur Springs.
Rory McIlory, who won three titles during the season, beat Brooks Koepka, Matt Kuchar and Xander Schauffele in a vote by players for the Jack Nicklaus Award.
Rory McIlroy was crowned FedEx Cup champion just 16 days ago and the new season will kick off Thursday.
Stacy Lewis will stay with the US team as her experience is an incredible asset to the squad.
The BBC reports Brian Barnes died of cancer.
The United States have a stronger line-up top to bottom, headed by world No 3 Lexi Thompson.
Hannah Green is the first Australian to win multiple titles in one season since Minjee Lee in 2016.