American twins Mike and Bob Bryan celebrate winning the men's doubles title

Elena Dementieva makes an excellent start to her semi-final against Mary Pierce

Pierce struggles to keep pace with Dementieva as she drops the first set

Pierce receives a 12-minute injury timeout at the end of the first set

The lengthy break seems to disrupt Dementieva and the Russian wins just four more games

Pierce battles through to a 3-6 6-2 6-2 victory and her first US Open final

Kim Clijsters powers into the lead against Maria Sharapova in the second women's semi-final

Sharapova loses six straight games before fighting back to level at one set all

But Clijsters holds her nerve to win 6-2 6-7 (4-7) 6-3 and reach her second US Open final

Clijsters and Sharapova pay their respects after a truly memorable semi-final

Sharapova is left with the consolation that she will be world number one next week