James Spencer Courier (born August 17, 1970) is an American former professional tennis player. He was ranked as the world No. 1 in men's singles by the Association of Tennis Professionals (ATP) for 58 weeks, including as the year-end No. 1 in 1992. Courier won 23 ATP Tour-level singles titles, including four majors – two at the French Open and two at the Australian Open – and was the youngest man in the Open Era to reach the final of all four singles majors, aged 22 years and 11 months.
https://en.wikipedia.org/wiki/Jim_Courier