Angelique Kerber of Germany beat top-seeded Caroline Wozniacki 6-4, 6-4 to win the e-Boks Open on Sunday and her second title of the year. The second-seeded Kerber, who won her first WTA tournament at the Paris Indoors in February, broke the Dane's serve three times in each set to earn the title in 1 hour, 38 minutes. Wozniacki had sought her third straight title in her home tournament, but couldn't match the 24-year-old German, breaking only twice in each set. Earlier Sunday, Kimiko Date-Krumm and Rika Fujiwara of Japan secured the doubles title by beating Sofia Arvidsson of Sweden and Estonia's Kaia Kanepi, 6-2, 4-6, 10-5. Errani bags title Sara Errani of Italy won her third Barcelona Open title in four years after beating third-seeded Dominika Cibulkova 6-2, 6-2 in Sunday's final. The seventh-seeded Errani needed just over an hour to brush aside Cibulkova on the outdoor clay court where she also won in 2011 and 2009. Errani was the runner-up in 2010. Isner to face Monaco In Texas, US second seed John Isner outlasted Spanish third seed Feliciano Lopez 6-7 (5-7), 7-6 (7-4), 6-3 Saturday to reach the final of the $442,500 ATP US Men's Clay Court Championship. Isner will seek his fourth career title in Sunday's final against Argentina's fourth-seeded Juan Monaco, who beat US qualifier Michael Russell 5-7, 6-1, 6-4 in the other semifinal. Tearful Ljubicic retires In Monte Carlo, former world No. 3 Ivan Ljubicic retired from professional tennis with a whimper after he lost 6-0, 6-3 to Ivan Dodig in the first round of the Monte Carlo Masters Sunday. The 33-year-old Croatian, a Monaco resident, fell into his chair in tears after the defeat while the sparse crowd granted him a standing ovation. He was gifted a special award from ATP boss Brad Drewett and tournament director Zeljko Franulovic.
