A 6-foot-6 forward, he was a starter the last two of his three seasons with the Musketeers. Martin was second on the team in scoring (11.7 points per game) and rebounding (5.2) as a junior.
Martin is eligible because he earned his bachelor's degree at Xavier, which went to the NCAA tournament twice in his three seasons.
Martin will join one of the nation's top recruits in guard Emmanuel Mudiay as SMU tries to build on a 27-10 season that ended with a loss to Minnesota in the NIT championship game.
The Mustangs were left out of the NCAA tournament in their second year under Hall of Fame coach Larry Brown.