The Wizards have lost five of their last seven games and are are one game behind Milwaukee for eighth place in the Eastern Conference. Washington is three game ahead of 10th-place New York.
Washington fell three games under .500 with a 90-80 road loss to the Detroit Pistons on Friday.
Washington point guard Tyronn Lue scored eight points in his first game after missing six in a row with a separated left shoulder.
The Wizards have won four of their last six home games and are 22-13 at the MCI Center this season.
The struggling Heat failed to win consecutive games for the first time in more than three months with an 87-83 home loss to the New Orleans Hornets on Friday.
The Heat are just 9-25 since their last winning a streak - a three-game run from December 27-January 1.
Miami snapped a six-game road losing streak with Tuesday’s win in Cleveland and is just 8-24 away from home this season.
The Heat have a 40-20 all-time advantage over the Wizards, including a 17-13 edge on the road. The teams have split two meetings this season, with each winning on its home court.