The Hawks have won three straight games for the third time this season and have won five of six following a six-game slide. They are trying to win four in a row for the first time since December 19-26, 2000.
Atlanta is playing its best basketball at the right time as it plays 10 of its next 13 games on the road. The Hawks finish the stretch with a season-high seven-game road trip that includes five Western Conference opponents.
Atlanta matched its longest winning streak of the season with a 97-89 victory over the Orlando Magic on Sunday.
Theo Ratliff collected nine points, nine rebounds and tied a career high with nine blocks.
Atlanta has won two of its last three road games and is just 4-18 away from Philips Arena this season.
Miami has lost four of its last five games and opened a four-game homestand with a 67-65 loss to the San Antonio Spurs on Saturday.
Miami has lost three of its last four home games to fall to 10-13 at American Airlines Arena this season.
The Heat have won two of three meetings with the Hawks this season, sweeping a home-and-home series on December 30 and January 1. They are trying to win the season series for the fifth time in seven years against Atlanta, which is 9-18 all time in Miami.