Gregory Léster Ruíz David (born March 8, 1981) is a Guatemalan player who currently plays for Halcones FC in the liga nacional the highest division in Guatemala. He was on the provisional roster for the Central American Cup Tigo 2014 USA. He is the nephew of Deborah Lastenia David, star of the late Celia Cruz video "La negra que tiene tumbao" , hence his nickname "El Tumbao".