Laura Robson's superb run in the Sony Open doubles continued as she and Lisa Raymond beat top seeds Sara Errani and Roberta Vinci to reach the final.
The 19-year-old Briton and 39-year-old American beat the Italian world number one pairing 6-1 6-2 in Miami.
Nadia Petrova and Katarina Srebotnik take on Svetlana Kuznetsova and Flavia Pennetta in the second semi-final.
Raymond has won 79 doubles titles, including the French Open and US Open, since turning professional in 1993.
Robson, who will be playing in her first WTA doubles final on Sunday, is currently ranked 43 in singles and 248 in doubles, with the latter set to improve dramatically when updated on Monday.
The former Wimbledon junior champion lost in the second round of the singles last week.
More to follow.