Australia's wicketkeeper-batsman Brad Haddin today announced his retirement from international cricket. The 37-year-old, however, will continue playing Twenty20s in the Big Bash League for Sydney Sixers.Haddin, who was part of the Australian Test squad that lost 2-3 to England in the Ashes series recently, had retired from ODIs after winning the World Cup at home earlier this year. He played 126 ODIs and 34 T20Is.