Top seed Agnieszka Radwanska will meet reigning champion Maria Sharapova in the last eight of the Porsche Tennis Grand Prix in Stuttgart after both secured straight sets victories in the second round.
Rafael Nadal remained on course for a ninth Barcelona Open title by easing into the quarter-finals with a straight-sets win over Ivan Dodig at Real Club de Tenis.
Second seed Mikhail Youzhny suffered a shock straight-sets defeat to world number 47 Robin Haase in the second round of the Nastase Tiriac Trophy in Bucharest.
Third seed Yvonne Meusburger successfully saw off Estrella Cabeza Candela in straight sets to reach the quarter-finals of the Marrakech Grand Prix on Thursday.
Tennis star Andy Murray struggled to hold back tears as he was granted the f reedom of Stirling on an emotional return to his home town.
Eight-time champion Rafael Nadal needed nearly two hours to overcome countryman Albert Ramos and reach the Barcelona Open Banc Sabadell third round.
Former Wimbledon champion Petra Kvitova crashed out of the Porsche Tennis Grand Prix as world number 102 Alisa Kleybanova continued her fightback from cancer.
Defending champion Lukas Rosol is through to the Nastase Tiriac Trophy quarter-finals after overcoming Jarkko Nieminen.
Top seed and wild card Daniela Hantuchova progressed to the Marrakech Grand Prix quarter-finals with victory over last year's runner-up Lourdes Dominguez Lino.
Defending champion Maria Sharapova emerged triumphant from a gruelling contest of three tie-breakers against Lucie Safarova in the first round of the Porsche Grand Prix in Stuttgart on Tuesday.
World number one and defending champion Rafael Nadal will face fellow Spaniard Albert Ramos in the second round of the Barcelona Open following the latter's victory over Nikolay Davydenko on Tuesday.
Greg Rusedski is to coach Britain's brightest young tennis prospect, Kyle Edmund.
Top seed and wild card Daniela Hantuchova struggled past world number 176 Renata Voracova to book her place in the second round of the Marrakech Grand Prix in Morocco.
Novak Djokovic is optimistic of being fit for the Madrid Masters in two weeks' time after his wrist injury was found to be not as serious as first thought.
Former world number eight Radek Stepanek crashed out in the first round at the Barcelona Open on Monday as he was beaten in straight sets by 20-year-old qualifier Dominic Thiem.