Roy Allen Williams (born August 1, 1950) is head coach of the men's basketball team at the University of North Carolina.After averaging nearly an 80% win percentage in 15 seasons at the University of Kansas, he became the eighteenth head coach at North Carolina when he replaced Matt Doherty in 2003. He is second all-time for most wins at Kansas behind Phog Allen and at North Carolina behind his mentor Dean Smith. Additionally, he is third all-time in the NCAA for winning percentage. Williams has taken his teams to seven Final Fours in his careers at Kansas and North Carolina (fourth all-time inNCAA history). From 1990-2009, Williams led his teams at Kansas and North Carolina to 20 consecutive NCAA Tournament appearances (second all-time) and earned at least one victory in each appearance, achieving the all-time record for most consecutive NCAA Tournament appearances with a win.These streaks both ended in the 2009–2010 season as UNC failed to receive a bid to the NCAA Tournament.He earned his 400th win in January 2003, when Kansas beat the University of Wyoming. Coach Williams won his 500th career game against High Point University on December 9, 2006 in Chapel Hill. On November 29, 2009, Williams earned his 600th career victory by defeating the University of Nevada. Williams became only the 33rd coach in Division I Men's Basketball history, as well as the third-fastest, to achieve at least 600 career wins. On April 4, 2005, Williams shed his title as "the most successful coach to never have won an NCAA ring" as his Tar Heels defeated the University of Illinois in the 2005 NCAA Championship game. He would again lead them to victory 4 years later, defeating the Michigan State Spartans in the 2009 NCAA Championship game on April 6, 2009. Williams is the fourth active coach, and thirteenth overall, to win multiple National Championships.In 2007, Williams was inducted into the Basketball Hall of Fame.Williams has a career record of 643-163.