Collated results from the ATP tournament in Halle on Friday (x denotes seeding): Quarter-finals Andrey Rublev (RUS x4) bt Philipp Kohlschreiber (GER) 7-6 (7/4), 6-2 Nikoloz Basilashvili (GEO) bt Lloyd Harris (RSA) 6-4, 7-6 (7/5) Felix Auger-Aliassime (CAN) bt Marcos Giron (USA) 6-3, 6-2 Ugo Humbert (FRA) bt Sebastian Korda (USA) 6-2, 6-7 (5/7), 6-4 afp