ATP World Tour Finals Diary: Tomas Berdych the mental magician as he completes semi-final line-up

Where did that come from? Before this tournament, Tomas Berdych was not known for his mental prowess. A player with infinite skill, infinite talent, and infinite heart, he had never seemed able to sustain it for long. But this week has been different. He lost a match in which he had a match point (against [...]