Haarlem Baseball Week
Martínez played for the national team at the 1995 World Junior Championship, 2003 Baseball World Cup, 2004 Summer Olympics, 2006 World Baseball Classic, 2006 Haarlem Baseball Week, 2007 Pan American Games, 2007 Baseball World Cup and 2008 Summer Olympics, 2014 Central American and Caribbean Games and 2017 World Baseball Classic.