BEIJING: No 1 seed Agnieszka Radwanska strolled into the semi-finals of the WTA Shenzhen Open in straight sets on Wednesday, the only seed left in the $500,000 tournament. Radwanska, the world No 5 and winner of the WTA Finals in Singapore in November, disposed of her second home opponent in as many days, defeating Wang Qiang 6-3, 6-2 in little over an hour. But Canada’s Eugenie Bouchard, the No 6 seed, went out at the hands of Timea Babos of Hungary, 6-4, 6-4. The tournament in the southern Chinese boom town neighbouring Hong Kong has been littered with surprises and early exits, some of them to illness or injury.