The Scotsman used his vast repertoire of shots and took advantage of Novak Djokovic's slow start to win 6-2, 7-5 in Sunday's final.
Djokovic looked nervous at the start as the No. 4-seeded Murray raced to a 4-0 lead. In the second set, Murray rallied from a break down trailing 4-1.
Murray became the first three-time titlist on the men's tour this year. He finished with only 19 unforced errors while Djokovic had 43.
It was a matchup of Nos. 3 and 4 instead of the anticipated showdown between Nos. 1 and 2. Top-ranked Rafael Nadal lost in the quarterfinals to Juan Martin del Potro, and Djokovic upset Roger Federer in the semifinals.