Arguably the hottest player on tour at the moment, Pole Agnieszka Radwanska defeated Vera Zvonareva in a three set masterpiece to keep her title hopes alive at the 2011 WTA Championships, a season finale being played here in Istanbul, Turkey.

Click here to relive the exciting moments of this duel.

Radwanska made a bad start to the match and lost her serve three titmes to give Zvonareva the first set handily.

The second set opened on a favourable note for Radwanska who picked up the first two games easily, only to lose the next two to give Zvonareva a way back into the set. As the match progressed, Zvonareva lost her concentration and with it, the second set 2-6.

The final set turned out to be a real nail-biter as both players exchanged breaks before Zvonareva prepared to serve for the match at 5-3. Down two match points, Radwanska capitalised on Zvonareva's low percentage shot risks and saved another match point after it to level the final set 5-5. Zvonareva then looked a far cry from the player who looked in crushing form in the beginning of the match and lost her serve in the eleventh game to give Radwanska a chance to serve for the match which the Pole duly did and completed the fabulous victory in two hours and 25 minutes of play with a 1-6, 6-2, 7-5 scoreline.

Radwanska only hit 15 winners to a whopping 36 from Zvonareva but also benefitted from the 55 unforced errors committed by the Russian.

After Victoria Azarenka and Petra Kvitova's qualification, the two semifinal spots are up for grabs for the other three players -

I) If Radwanska manages to win even one set from Kvitova in tomorrow's match, she will qualify into the semifinals.

II) If Radwanska loses the match against Kvitova in straight sets, Zvonareva will finish the Red Group with second place in the standings to qualify into the last four.

III) The other semifinalist from the White Group will be decided with the outcome of the match between Samantha Stosur and Na Li as the winner will book a place in the last four.