They can't lose.

At the semi-finals of the ATP Tennis championship at the O2. These fans can't believe their luck 'cos the match coming up is between Federer and Wawrinka. Whoever wins will be fine with them. In fact there are hoards of supporters with Lets Go Roger and Stan The Man banners chanting across the arena at each other.

Me, I was rooting for Stan but Roger cruised through to Sunday's final. I reckon he will find it hard going against Djokovic though.