The Pistons dropped their 16th straight game to the Bulls in Detroit 108-104, putting them 5.5 games behind Central division-leading Chicago.
Detroit (6-15) has lost two straight, while the Bulls have won two in a row to take a one game lead on second-place Indiana.
The Pacers fell 92-89 to Denver Friday, as Andre Miller scored eight points and gave out an assist as part of a 10-0 Nuggets' run over the last two minutes of the game. George Hill missed a 3-point chance at the buzzer for Indiana, who broke a two-game winning streak with the loss.
Indiana (10-10) fell into a tie with Milwaukee (9-9) after the Bucks defeated Charlotte 108-93 Friday. Ersan Ilyasova scored a season-high 21 points for Mikwaukee, and Marquis Daniels had season highs with 18 points and six rebounds in the win.
Last-place Cleveland was without Dion Waiters for the third straight game, losing to Minnesota 91-73. The Cavaliers (4-16) host Detroit at 7:30 p.m. ET Saturday.