Djokovic's victory was yet another impressive march toward the finals in the last tournament of the year. The world's No. 1 player hasn't always fared well in the round robin tournament, he is 9-9 in his career, but he appears to be one step closer to claiming his first World Tour Finals championship since 2008.
Berdych had been on a roll in the round robin portion of the tournament, claiming wins over both Murray and Tsonga, but was overmatched by the powerful Djokovic.
Djokovic registered seven aces, won 82 percent of his first serves and 70 points, consistently overwhelming Berdych with well-placed shots.
With the win, Djokovic is now 11-1 in his career against Berdych.
Djokovic now holds wins over Murray, Tsonga and Berdych in the tournament and has only dropped one set, a 4-6 opener against Murray.
If Djokovic can continue at this level, he'll most likely face Roger Federer in the finals of a big tournament once again. Federer is undefeated in Group B play and has yet to drop a set in the tournament.
With a win over both potential semifinalists awaiting him on the other side of the bracket, Djokovic appears to be in the driver's seat once again.
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