Andy Roddick beats former Canada Open champion Mardy Fish in semis . Top-seeded American will play Canada 's Milos Raonic in his second final . Raonic , 20 , reaches his fourth successive final , beating fourth seed Mardy Fish . Women 's No . 4 Caroline Wozniacki through to final in Dubai tournament .
Andy Roddick beats former U.S. Open champion Juan Martin del Potro in semis . Top-seeded American will play Canada 's Milos Raonic in his 50th final . Raonic , 20 , reaches his second successive final , beating fourth seed Mardy Fish . Women 's No . 1 Caroline Wozniacki through to final in Dubai tournament .