Copa América Referee Appointments Semifinals

CONMEBOL has published the referee appointments for the semifinals of Copa América 2011:

Raúl Orosco to referee a semifinal at his first Copa América

SF1, La Plata, 19 July 2011, 21:45 lt.
Peru vs. Uruguay
Referee Raúl Orosco (BOL, r.)
Assistant Referee 1 Efraín Castro (BOL)
Assistant Referee 2 Marvin Torrentera (MEX)
4th Official Wilmar Roldán (COL)

SF2, Mendoza, 20 July 2011, 21:45 lt.
Paraguay vs. Venezuela
Referee Francisco Chacón (MEX)
Assistant Referee 1 Leonel Leal (CRC)
Assistant Referee 2 Humberto Clavijo (COL)
4th Official Walter Quesada (CRC)


To my mind, these appointments are odd surprises...