Butler scored 23 points and Nowitzki had 22 for the Mavericks, who have won 13 in a row and 19 of their past 21 games against Miami. Tyson
Chandler and Shawn Marion also hit double figures for Dallas.
The Heat are struggling, losing for the fourth time in five games despite getting 23 points from LeBron James and 22 apiece from Dwyane Wade and Chris Bosh.
Copyright 2010 United Press International, Inc. (UPI).