<p>Russia's Svetlana Kuznetsova produced another extraordinary comeback to win her second straight match at the WTA Finals on Wednesday, sealing a place in the semifinals.<br /><br /></p>.<p>Just two days after she saved a match point to defeat the defending champion Agnieszka Radwanska, Kuznetsova again rallied back from the brink to beat US Open finalist Karolina Pliskova 3-6, 6-2, 7-6 (8-6) in a heart-stopper at Singapore's Indoor Stadium.<br /><br />Kuznetsova still has another round-robin match to play on Friday against Garbine Muguruza but is already assured of finishing top of the White Group standings after Muguruza was beaten 7-6 (7-1), 6-3 by Radwanska in Wednesday's late match.<br /><br />Muguruza is out of the running for the semis after losing her first two matches, leaving Pliskova and Radwanska to battle it out on Friday to see who else goes through with Kuznetsova from the group.<br /><br />With sweat pouring from her face and her muscles aching after she had run herself ragged for more than two hours, the 31-year-old Kuznetsova triumphed through sheer willpower and nerves of steel.<br /><br />Pliskova, seven years younger than Kuznetsova but with ice in her veins as well after saving a match point to beat Muguruza on Monday, looked poised to end Kuznetsova's inspired run when she recovered from 4-1 down in the deciding third set to lead 6-5.<br /><br />But the towering Czech squandered her chance to serve out the match, hitting a string of unforced errors as she tried to end the contest quickly, as the relentless Kuznetsova broke back and forced a tiebreaker.<br /><br />The match was still in the balance when Pliskova saved three successive match points to draw level at 6-6 in the tiebreaker when the more experienced Kuznetsova regained her composure and won the next two points to seal victory.<br /><br />With Serena Williams and Maria Sharapova both absent from the prestigious end-of-season championship, Kuznetsova has emerged as the unlikely headline act of the $7 million tournament, restricted to the world's top eight players.<br /> </p>
<p>Russia's Svetlana Kuznetsova produced another extraordinary comeback to win her second straight match at the WTA Finals on Wednesday, sealing a place in the semifinals.<br /><br /></p>.<p>Just two days after she saved a match point to defeat the defending champion Agnieszka Radwanska, Kuznetsova again rallied back from the brink to beat US Open finalist Karolina Pliskova 3-6, 6-2, 7-6 (8-6) in a heart-stopper at Singapore's Indoor Stadium.<br /><br />Kuznetsova still has another round-robin match to play on Friday against Garbine Muguruza but is already assured of finishing top of the White Group standings after Muguruza was beaten 7-6 (7-1), 6-3 by Radwanska in Wednesday's late match.<br /><br />Muguruza is out of the running for the semis after losing her first two matches, leaving Pliskova and Radwanska to battle it out on Friday to see who else goes through with Kuznetsova from the group.<br /><br />With sweat pouring from her face and her muscles aching after she had run herself ragged for more than two hours, the 31-year-old Kuznetsova triumphed through sheer willpower and nerves of steel.<br /><br />Pliskova, seven years younger than Kuznetsova but with ice in her veins as well after saving a match point to beat Muguruza on Monday, looked poised to end Kuznetsova's inspired run when she recovered from 4-1 down in the deciding third set to lead 6-5.<br /><br />But the towering Czech squandered her chance to serve out the match, hitting a string of unforced errors as she tried to end the contest quickly, as the relentless Kuznetsova broke back and forced a tiebreaker.<br /><br />The match was still in the balance when Pliskova saved three successive match points to draw level at 6-6 in the tiebreaker when the more experienced Kuznetsova regained her composure and won the next two points to seal victory.<br /><br />With Serena Williams and Maria Sharapova both absent from the prestigious end-of-season championship, Kuznetsova has emerged as the unlikely headline act of the $7 million tournament, restricted to the world's top eight players.<br /> </p>