Roger Federer and Andy Murray displayed an excellent form in the ATP World Tour Finals opening day.
Both won in straight sets.
The Swiss Maestro cruised past David Ferrer 6-1 6-4 while Murray defeated Robin Soderling 6-2 6-4.
In Group A world Nr.1 Rafael Nadal will face Andy Roddick and Novak Djokovic will take on Tomas Berdich
