Rafael Nadal remained on course for a ninth Barcelona Open title by easing into the quarter-finals.
Mikhail Youzhny suffered a shock straight-sets defeat to Robin Haase in the second round of the Nastase Tiriac Trophy.
Agnieszka Radwanska will meet reigning champion Maria Sharapova at the Porsche Tennis Grand Prix in Stuttgart.
Yvonne Meusburger saw off Estrella Cabeza Candela in straight sets to reach the quarter-finals of the Marrakech Grand Prix.
Ana Ivanovic has singed up to play in June's Aegon Classic at the Edgbaston Priory Club in Birmingham.
Rafael Nadal needed nearly two hours to beat Albert Ramos and reach the third round of the Barcelona Open.
Petra Kvitova crashed out of the Porsche Tennis Grand Prix after losing to world number 102 Alisa Kleybanova.
Andy Murray struggled to hold back tears as he was granted the freedom of Stirling on an emotional return to his home town.
Defending champion Lukas Rosol is through to the Nastase Tiriac Trophy quarter-finals after overcoming Jarkko Nieminen.
Daniela Hantuchova progressed to the Marrakech Grand Prix quarter-finals with victory over Lourdes Dominguez Lino.