South Korea's Young Joo KIM and Oscar RUIZ ACOSTA of Colombia have been appointed as the referees for the two semi-finals of the FIFA Confederations Cup.

Kim will be in charge of the match in Azteca Stadium between hosts Mexico and the United States, assisted by Vladimir BERTIAGA of Panama and Bomer FIERRO of Ecuador on the lines, and Anders FRISK (Sweden) as fourth offiial.

At Jalisco Stadium in Guadalajara, Ruiz's assistants will be Domingo PEQUENINO (Mozambique) and Awni HASSOUNEH (Jordan), with Ubaldo AQUINO (Paraguay) as fourth official.

The officials for the final two matches will be appointed by the FIFA Referees' Committee on Monday.