Del Potro beats Raonic to reach Miami Open semis

Argentina's Juan Martin Del Potro edged out Canadian Milos Raonic in a closely fought quarter-final match at the Miami Open tennis tournament here.

The Argentine, who won the previous ATP tournament in Indian Wells, on Wednesday prevailed over the Canadian 5-7, 7-6, 7-6, winning two crucial tie-breaks to qualify for the semi-finals where he will face John Isner of the US, reports Efe.

"It was great tennis, a great battle, and I think we both enjoyed the game. I'm so glad I'm still alive (in the tournament)", Del Potro said.

With the win, the world number 6 has extended his unbeaten run to 15 matches.

"I'm thinking about my last effort of the trip, that it could be my last match, but I always have another chance after tomorrow. I'm glad with my level of tennis, and of course I want to be in the final," Del Potro added.

Del Potro will play Isner on Friday for a place in the final.