[4] Williams took over as head coach and general manager of the Atlanta Dream of the WNBA on August 27, 2012, when the team fired Marynell Meadors.
However, forward Sancho Lyttle went out with a fractured foot, and the Dream struggled to finish the season, ending with a 17–17 record.
Nevertheless, the Dream got hot in the playoffs and earned their third trip to the WNBA Finals in four seasons, losing in three games to the Minnesota Lynx.
Despite guiding his team to an Eastern Conference championship, it was announced at the end of the season that Williams' contract would not be renewed.
[7][8] On January 23, 2014, the Shock announced his hiring as their third head coach since the franchise moved to Tulsa, replacing Gary Kloppenburg.