KEY BISCAYNE, Fla. (AP) Novak Djokovic won his fourth Key Biscayne title, while Rafael Nadal failed again trying for his first.
Djokovic dominated from the start and closed out the victory by winning a remarkable exchange to beat Nadal 6-3, 6-3 Sunday in the final of the Sony Open.
Nadal fell to 0-4 in finals at Key Biscayne, one of just three ATP Masters 1000 events he has yet to win. Only six-time champion Andre Agassi has won the men's event more than Djokovic.
Djokovic erased the only break point he faced, committed just 15 unforced errors and won a scrambling, 30-shot rally on the final point.
He completed a March sweep after beating Roger Federer in the final at Indian Wells two weeks ago. Even so, Nadal will remain ranked No. 1 and Djokovic No. 2.