USA 0-0 Cameroon
Cameroon clinched top spot of Group B in the Confederations Cup after playing out a goalless draw with the United States on Monday.
Tim Howard denied Joseph Desire Job on 24 minutes
The Africans had already booked their place in Thursday's semi-finals thanks to 1-0 wins over Turkey and Brazil.
Winfried Schaefer's side will now play Colombia, who finished second in Group A behind holders France.
Cameroon fielded a weakened side against the USA, with only Lucien Mettomo and Mohamadou Idrissou being retained in the starting line-up following the victory over Turkey.
Bruce Arena's side dominated the game and had two early chances when Eddie Lewis shots were cleared off the line by Ngassam Falemi and Mettomo.
Mettomo made another goalline clearance after 23 minutes, denying Clint Mathis, before US goalkeeper Tim Howard parried a fierce volley by Joseph Desire Job a minute later.
Arena introduced Landon Donovan after the interval to inject some spirit into the US attacks.
But when Schaefer replaced Job with Samuel Eto'o with 15 minutes remaining, the Americans seemed content to sit back and defend.
USA: Tim Howard; Steve Cherundolo, Carlos Bocanegra, Danny Califf, Cory Gibbs, Eddie Lewis (DeMarcus Beasley 81), Kyle Martino (Landon Donovan 55), Chris
Armas, Bobby Convey, Jovan Kirovski (Earnie Stewart 70), Clint Mathis.
Cameroon: Eric Kwekeu; Thimothee Atouba, Pierre Njanka, Lucien Mettomo, Ngassam Falemi, Joel Epalle, Achille Emana, Gustave Bahoken (Geremi 83), Valery Mezague (Modeste Mbami 75), Mohamadou Idrissou, Joseph-Desire Job (Samuel
Referee: Mark Shield (Australia).