Lleyton Glynn Hewitt is an Australian former professional tennis player. He was ranked as the world No. 1 in men's singles by the Association of Tennis Professionals (ATP) for 80 weeks, including as the year-end No. 1 in 2001 and 2002. Hewitt won 30 singles titles and 3 doubles titles on the ATP Tour, including two singles majors at the 2001 US Open and 2002 Wimbledon Championships, a doubles major at the 2000 US Open, the 2001 and 2002 Tennis Masters Cups in singles, and led Australia to Davis Cup crowns in 1999 and 2003. In November 2001, Hewitt became (at the time) the youngest man to reach No. 1 in the ATP singles rankings, at the age of 20 years, 8 months and 26 days. He was also the runner-up at the 2004 US Open and 2005 Australian Open. As of the end of 2025, he remains the most recent Australian man to win a singles major.