Jacques Kallis, considered one of the greatest all-rounders of all times, today announced his retirement from all formats of international cricket. In a statement released today he thanked Cricket South Africa, the team, the team sponsors, the fans and all the people who have been involved in his career. He said,It has been an amazing journey. Kallis said that he is not retiring from all cricket as he has a two-year contract with the Sydney Thunder. He added that if possible, he would help the Kolkata Knight Riders defend the IPL title.