DUBAI, United Arab Emirates — Novak Djokovic will put his unbeaten record in 2011 on the line against Roger Federer in the Dubai Championships final today.

DUBAI, United Arab Emirates — Novak Djokovic will put his unbeaten record in 2011 on the line against Roger Federer in the Dubai Championships final today.

Federer maintained his dominance over Richard Gasquet of France with a 6-2, 7-5 victory in the seminal Friday. Djokovic beat a hobbling Tomas Berdych of the Czech Republic, whose thigh injury forced him to retire while trailing 6-7 (5), 6-2, 4-2.

Djokovic will look to make it two in a row against Federer. He defeated the Swiss star in the semifinals of the Australian Open en route to his second Grand Slam title.

The No. 3-ranked Djokovic has won all 13 matches he has played this year. Federer's only loss in 15 matches was to Djokovic. The two players have won six of the last eight Dubai titles between them.

Qatar Ladies Open

At Doha, Qatar, second-seeded Vera Zvonareva rallied to defeat Jelena Jankovic 6-1, 2-6, 6-4 to set up a final against top-ranked Caroline Wozniacki in the Qatar Ladies Open.

Wozniacki cruised into the final with a 6-1, 6-1 win over Marion Bartoli of France. She will be aiming for her 14th career title after winning the trophy in Dubai last week.

Delray Beach International

At Delray Beach, Fla., Juan Martin del Potro of Argentina reached his third consecutive semifinal by beating fifth-seeded Kevin Anderson of South Africa 6-4, 6-4 in the Delray Beach International Tennis Championships quarterfinals.

Del Potro will face mardy Fish, who beat Alejandro Falla 6-1, 6-4.

The other semifinal will feature Kei Nishikori and sixth-seeded Janko Tipsarevic of Serbia. Tipsarevic defeated Ivan Dodig of Croatia 7-6 (0), 6-1, while the 66th-ranked Nishikori beat Ryan Sweeting 6-7 (5), 6-2, 6-4.

Tipsarevic won their only prevoius match in the quarterfinals at Chennai earlier this year.

Del Potro never offered Anderson a break point opportunity in their match, taking advantage of both break points he was presented. Meanwhile, Fish was able to break Falla's serve on three occasions — in the second and sixth games of the first set, and the first game of the second.

"I came out and took advantage of some errors he gave me and I played pretty clean," Fish said. "I stepped it up some in my last two service games and closed it out."

Tipsarevic saved all three break points he faced on serve, and successfully broke serve on both break point opportunities he had in the match.

Nishikori was able to save all three break points he faced on serve — one in the fourth game and two in the eighth game of the second set.