Top seed Roger Federer stayed on course for a seventh title at the Basel International but was given a scare by David Goffin. Rafael Nadal beat Marin Cilic.
Roger Federer maintained his perfect record against Philipp Kohlschreiber with an 11th straight victory to reach the Basel International quarter-finals.
Maria Sharapova made light of her long injury layoff by advancing to the last four of the WTA Finals with an unbeaten record in round robin play after the Russian breezed past Flavia Pennetta 7-5 6-1 on Thursday.