The Atlanta Hawks have signed Shelvin Mack to a 10-day contract in an effort to strengthen the depth in their backcourt. Mack replaces Jeremy Tyler who was waived earlier on Wednesday. Mack brings some NBA experience to the Hawks having spent part of two seasons with the Washington Wizards. Mack also played four games with Philadelphia earlier this season. Currently Mack was playing with the Maine Red Claws of the NBA D-League and was ranked as the No. 1 prospect currently in the Development League by the NBA's official site. In 23 games with the Red Claws, Mack is averaging 20.1 points and 7.7 assists while making 45 percent of his field goal attempts. Mack will wear No. 8 with the Hawks and will be available for tonight's game against the Sixers.