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Novak Djokovic and Roger Federer appear back on track after early losses in Madrid last week. Serena Williams, meanwhile, is maintaining her dominance.

Serena Williams and Maria Sharapova will play for the No. 1 ranking and the Madrid Open title after winning semifinals in straight sets Saturday.

Roger Federer was ousted by Kei Nishikori of Japan with a 6-4, 1-6, 6-2 loss Thursday in the third round of the Madrid Open.

Top-seeded Maria Sharapova got through another tough test in outlasting Ana Ivanovic 7-5, 4-6, 6-4 on Friday to advance to the semifinals of the Porsche Grand Prix.

Ana Ivanovic defeated Andrea Petkovic 6-3, 6-2 Tuesday in the first round of the Porsche Tennis Grand Prix.

Defending champion Agnieszka Radwanska led several of the top seeds into the Dubai Championships quarterfinals on a Wednesday overshadowed by the withdrawal of Serena Williams because of a back injury.

Former Wimbledon champion Petra Kvitova got out of the first round of the Dubai Championships for the first time in three visits by easily handling Daniela Hantuchova 6-2, 6-1 on Tuesday.

Sloane Stephens lost in the first round of the Dubai Championship on Monday, the latest setback for the rising American star who reached the Australian Open semifinals.

Serena Williams moved within a victory of becoming the oldest top-ranked women's player, sweeping aside Urszula Radwanska 6-0, 6-3 on Thursday to reach the Qatar Open quarterfinals.

Second-seeded Maria Kirilenko of Russia reached the Pattaya Open semifinals by beating Elena Vesnina 7-6 (6), 6-3 Friday.

Ayumi Morita of Japan knocked top-seed Ana Ivanovic out of the Pattaya Open on Thursday, beating the Serb 6-3, 5-7, 6-3.

Rain washed out play Wednesday at the Pattaya Open with defending champion Daniela Hantuchova of Slovakia yet to play her first round match.

Top-seeded Ana Ivanovic was saved by the rain Tuesday when the last set of her first-round match with Japan's Ayumi Morita was suspended at the Pattaya Open.

Victoria Azarenka had the bulk of the crowd against her. The fireworks were fizzling out, and when she looked over the net she saw Li Na crashing to the court and almost knocking herself out.

Spain defeated Serbia 2-1 to win the Hopman Cup for the fourth time on Saturday.

Novak Djokovic and Ana Ivanovic led Serbia into the Hopman Cup final, winning their singles matches Friday over Germany.