Rafael Nadal moved into the final of the Sony Ericsson Open in Miami with a straight-sets win over Tomas Berdych.

The world number two, looking for his first title since Stuttgart last July, won 7-6 (8-6) 6-2 in Friday's first semi-final.

Andy Roddick returns after his win over Roger Federer on Thursday to play Nikolay Davydenko in the second semi-final later on Friday.

Nadal lost an early lead and needed five break points to seal the first set but raced through the second.

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