Cahill was dismissed in the 56th minute of Australia's 4-0 defeat in Durban for a challenge on Bastian Schweinsteiger. The Germany midfielder later approached Cahill in the media mixed zone following the game and told his opponent that he should not have been dismissed.

Schweinsteiger's gesture left Cahill on the brink of tears and as he contemplated a ban which may yet see him suspended for the remainder of the group stage, the Everton star admitted he was at a low ebb.

"I'm just sad. It's probably one of the saddest moments of my footballing career to be in this position," Cahill said. "To hear Schweinsteiger say that, it's very nice of him to say it wasn't a red card. It just shows you how dreams can be made and crushed in the space of hours.

"It's one of the lowest points of my career. But this is the beauty of football. One day you are a hero, the next day you are at the bottom.

"My leg stayed bent all the way. Never once did I try to straighten it. What do you want me to say?"

Australia find themselves bottom of Group D after their heavy defeat in Durban and must now respond with positive results in their remaining two games. Cahill believes Pim Verbeek's side can overcome his suspension against Ghana and possibly Serbia.

"One hundred percent, it isn't about one player," Cahill said. "We've said from the start. I think for us, as players, especially myself is to be a role model to the young players and to try and make sure that I try and play as well as I can.

"I never doubt my own character. One thing I am is 100% committed to the cause. I'm 100% behind the lads and I'll train just as hard to prove my worth."