Top seed Svetlana Kuznetsova crashed out of the Sony Ericsson Open after suffering a 6-3, 6-0 fourth round loss to former Wimbledon finalist Marion Bartoli of France. Kuznetsova received on-court treatment for a nagging shoulder injury three times in Monday's match. Bartoli claimed her first win in three meetings with the Russian and advanced to the Miami quarter-finals for the second time in her career. She has now won seven of her past 11 matches against top five players. On the men's side of the draw, Swiss star Roger Federer swept past France's Florent Serra 7-6 (7-2), 7-6 (7-3) in a third round match. Federer, who is seeded No. 1, was not in top form Monday and had his service broken three times. He had two costly double-faults and committed 35 unforced errors to 32 for Serra. But Federer closed out the win with a service winner as he played well in the tiebreakers. Watching from the stands on Monday was Spaniard Rafael Nadal, who could meet Federer in Sunday's final. Federer won the Key Biscayne title in 2005 and 2006. His 36 career victories in the event is third behind Pete Sampras and Andre Agassi. A potential semifinal opponent for Nadal is No. 6 Andy Roddick, who reached the final 16 by beating Sergiy Stakhovsky in 55 minutes, 6-2, 6-1. Nadal will next face fellow Spaniard David Ferrer, who beat Ivo Karlovic 7-6 (5), 6-3. Second-seeded Caroline Wozniacki and defending champion Victoria Azarenka also won. Wozniacki, hampered by a viral illness and dizziness, rallied to beat No. 32 Maria Kirilenko 1-6, 6-1, 6-4. Five games into the match, Wozniacki required treatment from a trainer, who checked her blood pressure before the match resumed. “I just thought, ‘OK, I don't have anything to lose,”' Wozniacki said. “I just tried to go out there and fight for every point. The third set I started to feel better.” The No. 4-seeded Azarenka beat Lucie Safarova 6-4, 6-2. Ivanovic pulls out of Fed Cup tie Former world No. 1 Ana Ivanovic has pulled out of Serbia's Fed Cup World Group playoff tie with Slovakia next month over poor form. Ivanovic, who won the French Open in 2008 to reach the top spot, has plummeted to 58th in the rankings after suffering a series of morale-crushing defeats. “I spoke with captain Dejan Vranjes and the president of the (Serbian tennis) federation Slobodan Zivojinovic and together we decided that under these circumstances it's not the right time for me to be part of the team,” Ivanovic said on her official website (www.anaivanovic.com) on Monday. “Despite my non-presence I believe we have a good team led by Jelena (Jankovic) and this is a great opportunity for one of the young, upcoming players to play on the biggest stage. I know that Serbia will put up a performance of great commitment and passion as always while I will continue to make all the necessary steps to find my form.” Although she lost both her singles in a 3-2 first round defeat to Russia in Belgrade, Ivanovic's absence will seriously dent Serbia's hopes of staying in the World Group. With only a handful of young prospects in support, world No. 8 Jankovic faces a mammoth task of winning both her singles and the doubles in the home tie.
