The Australia-Pakistan match on Tuesday was expected to be one of the high-profile clashes of the 2003 World Cup. But it had its thunder stolen by a shocking revelation just a few hours before it got underway. Australian television channels reported that champion leg-spinner Shane Warne, for whom the World Cup was to be his last ODI hurrah, had decided to fly home after testing positive for a diuretic – a substance that is often used as a weight-reducing drug. "I'm shocked because I have not taken performance enhancing drugs. I did take a fluid tablet before my comeback game in Sydney and didn't know it contained any banned substance," the leg-spinning great observed in the press- conference during which he confirmed the news.