Porsche Tennis Grand Prix: Emma Raducanu beats brave Tamara Korpatsch and clears Swiatek showdown

US Open winner Emma Raducanu (WTA No. 12) has reached the quarterfinals at the Porsche Tennis Grand Prix with a 6:0, 2:6, 6:1 victory over Tamara Korpatsch - and now meets the measure of all things in women's tennis.