Milos Raonic has won his third ATP Tour title and second SAP Open in a row by beating Denis Istomin in straight sets.

The 21-year-old secured victory in 79 minutes, blasting seven aces past the Uzbek on his way to a 7-6 (7-3) 6-2 triumph.

Raonic's powerful serve was too much for Istomin to handle, clocking 150 mph in the sixth game of the contest.

After taking the first set on a tie-breaker, Raonic broke his opponent to take a 3-1 lead in the second set before serving out to claim the title.

"I feel amazing," said the Canadian. "It's definitely a different feeling from the first time last year. I think I'm more aware and a lot happier.

"I think everything I wanted to do, I did and I did it right. I'm very proud of that."

The Canadian becomes the first two-time winner on this season's tour following his win in the Aircel Chennai Open in January.

Meanwhile, Istomin still awaits his first tour title.