Jack Sock moves past Yoshihito Nishioka via retirement; faces Rafael Nadal next
US Open Spotlight: Jack Sock - Official Site of the 2023 US Open Tennis Championships - A USTA Event
Jack Sock retires despite leading Diego Schwartzman at the 2022 US Open - Official Site of the 2023 US Open Tennis Championships - A USTA Event
Jack Sock, the great hope of US men's tennis? 'You don't really dwell on it' | Wimbledon | The Guardian
US Open Tennis on Twitter: "Jack Sock & Frances Tiafoe are victorious in Roger Federer's final pro match. #LaverCup https://t.co/mFi5MGKgk1" / Twitter
Doc: Midwestern Jack Sock what W&S Open, tennis need