Seyboth Wild shocks Medvedev, Ruud through in straight sets while Purcell downs Thompson in all Australian affair

World number two Daniil Medvedev has found himself on the wrong end of a shock upset, falling to 23-year-old Brazilian Thiago Seyboth Wild in a marathon five set affair. World number four Casper Ruud also progressed out of the first round in straight sets, while Max Purcell dealt fellow Australian Jordan Thompson a quick exit.