Melbourne, Jan 25 Courageous Mirjana Lucic-Baroni kept her fairytale Australian Open alive Wednesday by stunning fifth seed Karolina Pliskova to make her first Grand Slam semi-final since Wimbledon in 1999. The unseeded Croat, a former teenage prodigy whose career was derailed by personal trauma, used all her experience to upset the Czech 6-4, 3-6, 6-4 in a Rod Laver Arena epic, before collapsing on court in tears.