Melbourne: Serena Williams brushed aside Britain's Johanna Konta to set up an Australian Open semi-final with an emotional Mirjana Lucic-Baroni yesterday -- 19 years after they last met as fellow teenage prodigies. The American great overcame a misfiring serve to halt Konta's nine-match winning streak 6-2, 6-3, staying on course for a potential all-Williams final with her sister Venus. Williams, 35, has come a long way since her last meeting with Lucic-Baroni in the second round at Wimbledon in 1998, when they were both 16 and without a trophy to their names.