He last signed with the Austin Toros of the NBA Development League, but was waived on December 30, 2006, due to lingering physical effects from his accident.

[3] He was also named the recipient of the 1999 Morgan Wootten Award for his basketball achievements and his work in the classroom, where he maintained a 3.6 GPA.

At Duke, Williams, a 6-foot-2-inch (1.88 m), 195-pound (88 kg) point guard, became one of the few freshmen in school history to average double figures in scoring and was named ACC Rookie of the Year and National Freshman of the Year by The Sporting News, averaging 14.5 points, 6.5 assists and 4.2 rebounds per contest.

[citation needed] The next season Williams started all 39 games and led the Devils to the 2001 NCAA National Championship, earning NABC Player of the Year honors.

His 21.6 points per game led the ACC and made him the first Duke player since Danny Ferry (1989) to lead the league in scoring.

He graduated with a degree in sociology in 2002, and left Duke with 2,079 points, good for sixth all-time, and with his jersey number 22 retired at Senior Day.

He had 36 double-figure scoring games in a single season (tied for 5th-most in Duke history as of March 28, 2010, with Jon Scheyer, Shane Battier, and JJ Redick).

Although his performance was inconsistent and he competed for playing time with Jamal Crawford, he showed signs of promise, including posting a triple-double in a win over the New Jersey Nets.

Williams' final NBA game was played on April 15, 2003, in a 115–106 win over the Philadelphia 76ers in which he recorded 14 points, 7 assists, 2 rebounds, and 1 steal.

He crashed his Yamaha YZF-R6 motorcycle into a streetlight at the intersection of Belmont Avenue and Honore Street in the Roscoe Village neighborhood.

[13] He has also done motivational speaking and worked as an analyst on CBS College Sports Network during the 2008 NCAA men's basketball tournament.

[16] Presently, Williams is the Spokesperson of Visions Federal Credit Union, headquartered in Endwell, New York.

According to a May 2020 article on BlackEnterprise.com, Williams co-founded a management consulting company named Simatree, serves as a partial owner of The CabinNYC restaurant, works as an advisor to a digital marketing agency, and partners with EPIC Insurance to provide financial guidance to athletes and celebrities.