Aryna Sabalenka's win at the US Open in New York on Tuesday night ended up being a big victory for all in attendance ... as she promised free booze to everyone who watched her score the W.
The 26-year-old made the offer just after rolling through Zheng Qinwen in the quarterfinals at Arthur Ashe Stadium ... when ESPN's Pam Shriver asked her how she planned on getting support in the next round against American Emma Navarro.
"Umm," the Belarusian said, "drinks on me tonight!