Defending champion Kerber wins her opening round at Aus Open
Australian Open women's singles defending champion Angelique Kerber advanced to the second round of the 2017 edition of the Grand Slam after defeating Ukraine's Lesia Tsurenko in three sets in the opening round on Monday. World number four Russia's Simona Halep crashed out of the tournament after a straight sets defeat at the hands of world number 52 Shelby Rogers.