At several moments during her match, Luksika Kumkhum said her heart shook. Before long, the crowd at the 5,000-seat Margaret Court Arena was cheering for the speedy, unheralded Thai player, who made a name for herself at the Australian Open on Monday by eliminating former Wimbledon champion Petra Kvitova, 6-2, 1-6, 6-4 in a first-round upset. More...