Tennis:Elena Dementieva came from a set down to reach her first French Open semi-final since 2004 with victory against Nadia Petrova.
In an error-strewn match, both players struggled with leg injuries picked up earlier in the tournament.
Dementieva capitalised on her fellow Russian's discomfort to win 2-6 6-2 6-0 in two hours and six minutes on Suzanne Lenglen court to reach her ninth grand slam semi-final.
The 28-year-old will face Francesca Schiavone in the semi-finals after the Italian defeated third seed Caroline Wozniacki in straight sets.
Dementieva, a two-time grand slam finalist and runner-up at Roland Garros in 2004, said: "I've been in the final and a couple of times in the semi-final and never won.
"This is one of the biggest goals left in my career. This is great motivation for me.''
Both players took medical timeouts at 3-2 to Petrova in the first set.
The 27-year-old, who upset Venus Williams in the last round, admitted she had considered quitting in the decider with a groin injury she picked up in her marathon third round victory over Aravane Rezai.
She added: "It's just so difficult to quit and walk away because you just want to give it all.
"Anything can happen. On clay, somebody can sprain their ankle and not be able to continue.''