BERLIN: Jelena Jankovic won a fierce scrap with Venus Williams 6-7, 7-5, 6-2 on Saturday to set up a Stuttgart Grand Prix final against Nadia Petrova.

Serb Jankovic, seeded second but already assured of taking over as world number one on Monday, edged a classic encounter with the sixth-seeded American in two hours 45 minutes despite being hampered by a foot problem.

Jankovic had come through a tough match against Vera Zvonareva of Russia on Friday night and at the start of Saturday’s semifinal Williams looked fresher.

The American snatched the first set 10-8 on a tie-break and it was all Jankovic could do to hang on in the second. She made the break through in game 12 by forcing a set-point against serve.

Williams saved it before a terrible forehand into the net gave Jankovic another chance. The Serb dashed across court to chase down a weak volley and forced a deciding set with a forehand pass that clipped the outside of the line.

Jankovic broke Williams at the start of the third set and saved a series of break points to keep the advantage.

Williams, serving at 2-5, put an approach into the net to give Jankovic two match-points and she took the second of them as the American over hit another approach.

“I needed two injections just to play so it’s thanks to my doctor I’m in the final,” Jankovic said in a courtside interview.