Srebotnik and Križan won their only doubles title of 2001 at Hawaii. They reached their biggest doubles final of their career in Toronto at the Canadian Open by defeating Martina Navratilova and Arantxa Sánchez Vicario in the semifinals, and they were doubles finalists at Estoril. They qualified for their debut doubles season-ending championships. Srebotnik reached a career-high doubles of No. 19 on 8 October. In 2002, Srebotnik reached the finals at Bogotá (losing to Fabiola Zuluaga) and Acapulco (defeating Paola Suárez) in the final. She reached the fourth round at Roland Garros, which is her career-best Grand Slam. Srebotnik later achieved her then-best win at Los Angeles by defeating world No. 6, Kim Clijsters. She reached the semifinals in Luxembourg. She achieved her second appearance at the doubles season-ending championships with Krizan. 2003 saw Srebotnik reaching her fourth tour final at Palermo. She won the Bogotá doubles title with Asa Svensson, and reached her second Tier I quarterfinals in Toronto at the Canadian Open. She won her second Grand Slam mixed-doubles title at the US Open, this time with Bob Bryan. Her 2004 season was highlighted by reaching the semifinals at Palermo and the quarterfinals at Strasbourg and Forest Hills. Srebotnik won her seventh doubles title in Tokyo at the Japan Open (with Shinobu Asagoe). 2005 Her best season to date was highlighted by two singles and four doubles titles as well as a career-best victory over Amélie Mauresmo. Srebotnik captured her third and fourth career WTA Tour singles titles at Auckland (defeating Shinobu Asagoe in the final, and she teamed with Asagoe for the doubles title) and in Stockholm (defeating world No. 14 Anastasia Myskina in the final and teaming with Émilie Loit for the doubles title). She was the only player in 2005 to sweep singles and doubles titles twice. She also finished runner-up at Portorož, losing to Klára Zakopalová (now Koukalová) in three sets in the final. She also became runner-up in doubles with Jelena Kostanic. Srebotnik reached the quarterfinals five times: at Tier II at Antwerp (lost to Anastasia Myskina), Tier I Charleston (losing to Elena Dementieva in three sets), Budapest (losing to Laura Pous Tió in a third set tie-break), Tier I Zurich (losing to Ana Ivanovic), and Hasselt (losing to Dinara Safina in a third set tie-break). Her best finish in a major was a third-round loss at Wimbledon to Maria Sharapova. A new