Mack's 27 points lift the Jazz over Wizards
Mack shot 11-for-17 from the field and hit three 3-pointers.
John Wall had 24 points and nine assists, and Markieff Morris added 16 points for Washington, which lost its fourth straight to fall 21/2 games behind Detroit for the last Eastern Conference playoff spot.
Utah pulled away in the third, ending the quarter with a 22-10 run and a pair of fast-break layups.