Following his side's 6-1 defeat against Serbia in Novi Sad last night Chris Coleman described the performance as "unacceptable".
At a press conference following the match, which was littered with defensive errors, Coleman admitted he was shocked and lost for words to describe his side's 90 minute performance.
This was Wales' heaviest defeat since 1930 and sitting at the bottom of their group Chris Coleman's men now have a mountain to climb if they are to qualify for the 2014 World Cup in Brazil.
After going two goals down Gareth Bale brought his side back into the match with a stunning free-kick.
But the hope of securing their first victory under new manager Coleman was short lived.
Just before the whistle blew for half time an awful defensive header by Darcy Blake allowed Serbia to extend their lead once again.
Wales' dismal performance continued into the second half as the wheels totally fell off Wales' defence to allow Serbia another 3 goals and a well deserved victory.
Just five games into his reign as Wales manager, last night's performance means Coleman has already come in for heavy criticism but at last night's press conference he said he was prepared to deal with it.
Wales' next fixtures in Group A come next month with a home tie against Scotland followed by a trip to Croatia.