She will next play 26th seed, Thai Tamarine Tanasugarn, who beat Russian Alina Jidkova 6-2 3-6 6-3.

BBC: Serena safely through

She will meet American Jill Craybas in the final, who upset second seed Tamarine Tanasugarn 6-4 4-6 6-4.

BBC: Carlsen books final spot

The Australian lost in straight sets, 6-4 6-2, to American Laura Granville, with ninth seed Marion Bartoli losing 6-3 6-0 to Thai Tamarine Tanasugarn.

BBC: SPORT | Tennis | Molik, Baltacha crash out of DFS