Australia beat Zimbabwe by 91 runs in their World Cup Group A match at the Sardar Patel Stadium here today. Brief scores: Australia 262/6 in 50 overs (Watson 79,Clarke 58). Zimbabwe 171 all out in 46.2 overs (Graeme Cremer 37; Mitchell Johnson 4/19,Jason Krejza 2/28,Shaun Tait 2/34).