Shelton defeated fellow American Frances Tiafoe 4-6, 6-3, 6-3, 7-5 on Friday (local time) to book a place in the final against top seed Alexander Zverev of Germany.source https://timesofindia.indiatimes.com/sports/tennis/beaten-guys-that-ive-never-beaten-before-one-win-from-history-ben-shelton-embraces-uncharted-territory-at-us-open/articleshow/134106904.cms