(MELBOURNE) — Andy Murray has reached the Australian Open final for the fourth time, beating Tomas Berdych in a tension-filled semifinal to earn one more shot at a long elusive title. Serena Williams has five titles from five finals at Melbourne Park, and earned a chance at another one when she advanced to a championship match against Maria Sharapova, who has one Australian title from three trips to the final. Top-ranked Serena Williams beat 19-year-old Madison Keys 7-6 (5), 6-2 in an all-American semifinal Thursday, after Sharapova beat fellow Russian Ekaterina Makarova in straight sets. In the night match, sixth-seeded Murray beat No.