Novak Djokovic produced another dominant performance to reach the Wimbledon fourth round after beating fellow Serb Miomir Kecmanović 6-0 6-3 6-4 on Friday.Novak Djokovic produced another dominant performance to reach the Wimbledon fourth round after beating fellow Serb Miomir Kecmanović 6-0 6-3 6-4 on Friday.