Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Federer Wins Australian Open by VOA News Swiss tennis star Roger Federer has defeated Spaniard Rafael Nadal in a marathon five set match to win the Australian Open in Melbourne and capture his 18th Grand Slam title. Federer outlasted Nadal 6-4, 3-6, 6-1, 3-6, 6-3 on Sunday. In the women's final on Saturday, American woman's tennis star Serena Williams defeated her sister Venus Williams in straight sets (6-4, 6-4). United States' Serena Williams, right, holds her trophy after defeating her sister Venus, left, during the women's singles final at the Australian Open tennis championships in Melbourne, Australia, Jan. 28, 2017. With the victory, the 35-year-old Williams powered her way into the record books with 23 Grand Slam titles, surpassing German Steffi Graf as winner of the most Grand Slams since the beginning of the Open era in 1968 when professional and amateur players competed in the same events. Aussie tennis icon Margaret Court won 24 majors, but collected 13 of those before the Open era. The victory at Rod Laver Arena also ensured Serena Williams will regain the top ranking, which she lost in September after 186 consecutive weeks when German Angelique Kerber won the U.S. Open.