 After playing for Pallacanestro Reggiana from 2000 to 2002, Clack signed with Basket Napoli in the Italian Lega Basket Serie A for the 2002-03 season where he averaged 11.5 points in 21 games.Clack spent the 2003-04 season in the United States in the XBL with the Austin Cyclones.He played for the Austin Toros during the 2006–07 NBA Development League season, averaging 8.5 points in 43 games.