Venus Williams has made certain of reaching the last four of the season-ending WTA tennis Championship in Doha with a landslide 5-7 6-1 6-0 victory over sister Serena Williams.
The result brought the first love set between them in any of their 18 WTA Tour matches and twice reduced the younger sibling to tears.
The Wimbledon champion's win over the US Open champion was her third in three days, enabling her to finish her top of her round robin group, and ensuring that she joined Jelena Jankovic and Vera Zvonareva in the knock-out semi-finals of the women's season-ending event.
But Serena, who has only one win, will need to beat Olympic champion Elena Dementieva tomorrow if she is to be sure of keeping alive the chances of an all-Williams final.
Earlier world number one Jelena Jankovic made sure that she would qualify for the semi-finals for the first time when she survived a first set wobble and a neck-and-neck second set to beat Svetlana Kuznetsova, the former US Open champion.
The Serb's straight sets victory over the Russian also made sure that Vera Zvonareva, the Russian who was the last to qualify for the eight-player finals, would also make it - far more unexpectedly - to this weekend's semis.
