World number one Novak Djokovic claimed his first title of the year with an impressive 6-1 6-2 win over Rafael Nadal in the Qatar Open.

The Serb continued his recent dominance of the 14-time Grand Slam title winner with a ninth victory in 10 meetings - the last five in straight sets.

The 28-year-old broke twice in both sets as Nadal had no answer to the pace and power of his groundstrokes.

Djokovic is preparing to defend his Australian Open title from 18 January.