Andrea Petkovic is up against Elena Vesnina for a place in the Istanbul Cup final.

You can watch Petkovic v Vesnina live for free at bet365>live streaming>tennis

Petkovic is very much a player on the rise at the moment, enjoying the best season of her career. She's stormed up the rankings into the top 40 and has an eye on securing a seeding for the US Open.

The sixth seed disposed comfortably of Elena Baltacha 6-4, 6-0 in the quarters. Baltacha had knocked out top seed Francesca Schiavone in round two but once Petkovic got used to the Brit's power, she  proved far too consistent.

Vesnina has found some form from nowhere in Istanbul. Before the tournament she had not won a match since April but so far this week she is yet to drop a set. She outfought Anastasia Rodionova 7-5, 6-1 in the last eight.

"It was a tough match and I thought in the first set, Anastasia and I played great quality tennis, we had great rallies and fought for every point," Vesnina said. "I was a little bit lucky at the end of the first set and in the second I was just able to focus on every single point and played well to get the win."  

They are 1-1 on head-to-heads but Petkovic won when they played in the French Open earlier this year, a tight three set battle 4-6, 6-1, 6-4.

Our prediction is for the German to tough out another win and make her second WTA final of the year.

You can watch Petkovic v Vesnina live for free at bet365. To watch, simply follow these 3 simple steps:

1. Go to bet365 and sign-up or register (it's free)
2. Click on Sports > Live Streaming > Tennis
3. Watch WTA Istanbul for free