"She's going to be the boos" was Carlos Alcaraz's response to questions on his upcoming partnership with Emma Raducanu at the US Open. (1:19)Open Extended ReactionsWith Wimbledon beginning Monday, Carlos Alcaraz' 2022 NetPro Premium Autograph Golden Slam Rookie Card, signed on-card and numbered 1-of-1, sold for $237,907 via Goldin Auctions late Saturday night. It's the most paid for a men's tennis card. Carlos Alcaraz' 2022 NetPro Premium Autograph Golden Slam Rookie Card sold for $237,907, the most ever paid for a men's tennis card. Courtesy of Goldin AuctionsThe record paid for a tennis card still belongs to a 2003 NetPro Serena Williams rookie patch autograph card that sold for $266,400 at Goldin Auctions in 2022.