Elena Baltacha booked her place in the main draw at the Sony Ericsson Open with a straight sets win over Chan Yung-jan.

The world number 62 progressed thanks to a 6-4 7-6 (8/6) win and joins Anne Keothavong and Heather Watson, who was given a wild card, in the main draw.

But there was no joy for Katie O'Brien who did not qualify after she suffered a 6-4 6-2 loss to Holland's Michaella Krajicek.