Furious Thai fans have demanded the resignation of the country's football president and want answers as to why a side once tipped to become an Asian football heavyweight has stumbled embarrassingly in every competition since Robson took over.
The former Manchester United skipper, who replaced compatriot Peter Reid in September 2009, called his own news conference to explain the team's dire form and admitted he would not give himself a passing grade in his first national team job.
"No, I don't count anything as a pass until we win," a stern-faced Robson said when asked to evaluate his performance as Thailand boss. "I'm quite disappointed, I want to win and it's results that matter."
"As far as I'm concerned, I'm coach here fulltime," he said. "People have said I keep going back to England or to Singapore to do TV work but I've not left Thailand for six months, other than for matches and last season I attended 72 (local) games."
He wants Thai football to be better organised and was confident that if given proper support, he could reverse his team's form in time for 2014 World Cup qualifiers next year.
"It's frustrating coming from the Premier League, people here do things off the cuff, it's a big change in mentality," he said.
"Everyone here is passionate about the game and everyone is very disappointed. We couldn't give the fans what they wanted. But there's hope there, we have the ability."
