 Yearwood played and scored at the 1977 FIFA World Youth Championship, the inaugural staging of the FIFA World Youth Championship held in Tunisia.He made his senior debut for Honduras in a June 1982 FIFA World Cup match against Spain, which was his country's first ever World Cup match, and has earned a total of at least 46 caps, scoring 1 goal.He has represented his country in 21 FIFA World Cup qualification matches and played at the 1991 and 1993 UNCAF Nations Cups as well as at the 1991 CONCACAF Gold Cup.