Tomas Berdych has beaten David Ferrer in straight sets in the ATP World Tour Finals to win his first game in Group A.
The Czech overcame Ferrer 6-4 6-4 after edging out his opponent in both sets following topsy-turvy contests.
The pair played out a back-and-forth opening set to reach 4-4, before Berdych sent a backhand up the line to give him breathing space at 5-4, and finishing it off in clinical fashion.
The second continued in a similar fashion before he won it with an ace which clocked 137mph.
