The racket that 23-time Grand Slam champion Serena Williams broke during her 2018 US Open final against Naomi Osaka is up for sale by Goldin Auctions. The opening bid has been set at $2,000. “I think low end would be $10,000, and I wouldn’t be surprised if it goes to $25,000 or $50,000,” said Ken Goldin, Founder of Goldin Auctions.