Number one seed and reigning champion, Serene Williams staged an almighty quarter final comeback to beat Victoria Azarenka 4-6 7-6 6-2 after being a set and 4-0 down.
She will now face China’s Li Na, who is 16/1 to win the tournament at Victor Chandler after scraping past Venus Williams 2-6 7-6 7-5.
The sixteenth seed is 11/2 at Skybet to cause another upset in Thursday night’s semi final which is scheduled to start at midnight GMT.
The winner will meet either Justine Henin or Stan James rank outsider Zeng Jie (18/1) in the final.
Compare odds on over 25 markets on the Ladies semi finals and bet at the best price on the overall winner.