Novak Djokovic tamed World No 1 Rafael Nadal 6-3, 6-3 to claim his fourth Sony Open title denying the Spaniard a maiden win on the Miami hard courts. The win was the second straight Masters series title for the second ranked Serb, who defeated Roger Federer in the BNP Paribas Open two weeks ago in Indian Wells."That was a great confidence boost for me that I carried on in this week, and this tournament has been perfect from the beginning to the end," said Djokovic, after hoisting his 43rd career title.The matches that I have played I played really well, and I elevated my game as the tournament progressed said Djoker.