Africa's champions Cameroon were handed a severe wake-up call in Tuesday's international friendly against Colombia as they were thumped 4-0 only five days before their Confederations Cup opener.
The Indomitable Lions beat Egypt to win the Africa Cup of Nations in Gabon earlier this year, but despite downing Morocco at the weekend, they were thoroughly outclassed by Jose Pekerman's side at Getafe's Coliseum Alfonso Perez Stadium and also had Robert Ndip Tambe dismissed.
James Rodriguez opened the scoring with a fine effort from a narrow angle after 16 minutes when he beat Andre Onana with a thunderous effort, before Yerry Mina doubled the South Americans' lead 15 minutes later with a header.
Mina added a second in the 52nd minute when he converted a fine delivery from Giovanni Moreno, but not before Spartak Trnava's Ndip Tambe had been sent off after tangling with Wilmar Barrios.
Substitute Jose Izquierdo completed the rout five minutes before time when he broke his international duck with a powerful strike.
The result adds to a troubled Confederations Cup build-up for Cameroon, who have lost first-choice left-back Ambroise Oyongo ahead of the tournament after he ruptured his patellar tendon against Morocco.
Similarly, FIFA has acknowledged the internal problems within the country's football administration, with some within the nation convinced that Tombi A Roko Sidiki's current regime has no authority to run the football federation.
Cameroon are competing in their first Confederations Cup since 2003, and have been drawn alongside Germany, Chile and Australia.