MIAMI: Andy Roddick's decision to take some risks paid off Friday as the American rallied to beat Spain's Rafael Nadal and book a clash with giant-killing Tomas Berdych in the final of the Miami Masters. Roddick engineered a turnaround to triumph 4-6, 6-3, 6-3 over world No 4 Nadal, who was the highest seed left in the draw. Berdych, who saved a match point en route to a stunning upset of world No 1 Roger Federer in the fourth round, dismantled fifth-seeded Swede Robin Soderling 6-2, 6-2. Berdych broke Soderling four times and faced only one break point himself. After being pushed around in the first set by Nadal Roddick realised he would have to do more. "I took a lot of risks there in the last two sets," Roddick said. "That's what I have to do. My comfort zone of moving the ball around and maybe chip, ping it around a little bit doesn't work against Rafa. I had to try to come up with something that at least took him out of his comfort zone a little bit, and it paid off."