Australian Open: Roger Federer, Serena Williams duck downpours at wet, wet, wet Oz

*Melbourne:* Serena Williams and Roger Federer avoided chaos caused by rain at the Australian Open on Monday as heavy downpours forced organisers to postpone a swathe of matches on the first day. After a build-up disrupted by smoke from deadly wildfires, a prolonged rain storm struck in mid-afternoon, sending thousands of...