In the 2007 South American Youth Championship in Paraguay, Leyton started the first two games for Chile.
Chile lost those two games by a combined scored of 5-2.
Leyton was regulated to the bench and Cristopher Toselli took over in goal for the rest of the tournament and subsequently the 2007 FIFA U-20 World Cup in Canada.
Leyton did not make the trip to Canada.
In 2010, he joined Santiago Morning.