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.
Simona Halep's roller-coaster season came to a welcome halt on Thursday when a crushing first set tie-breaker against Agnieszka Radwanska at the WTA Finals.
Russian Agnieszka Radwanska battled her way past Romanian Simona Halep in the WTA finals as she set herself up for a semi-final match against Pennetta.
Spain's Garbine Muguruza moved to the brink of the WTA Finals last four with a 6-4 6-4 win over Angelique Kerber on Wednesday after Petra Kvitova opened her account with a 7-5 7-5 victory over fellow Czech Lucie Safarova.