Eighth-seeded Denis Istomin of Uzbekistan earned an early exit at the Nice Open Sunday, falling to Lithuanian Ricardas Berankis in opening day action.
Top seeds Novak Djokovic and Roger Federer each rolled through second-round wins Tuesday at the Italian Masters tennis tournament in Rome.
Ninth-seeded Richard Gasquet of France and Bulgarian Grigor Dimitrov were among the Opening Day winners Sunday at the BNL International event in Rome.
Rafael Nadal and David Ferrer each won in straight sets Wednesday in second-round action at the Madrid Open tennis tournament.
Grigor Dimitrov finished off Monday's long schedule with a win at the Mutua Madrid Open that put him in the second round against world No. 1 Novak Djokovic.
No. 2-seed Stanislas Wawrinka overcame a poor start and claimed a second-round win over Albert Ramos Thursday at the Portugal Open tennis tournament.
Sixth-seeded Benoit Paire, despite dropping serve three times, won in straight sets Monday in opening day action at the Portugal Open tennis tournament.
Grigor Dimitrov posted a straight-set upset victory Tuesday in second-round play at the Monte Carlo Rolex Masters tennis tournament.
Bernard Tomic led a wave of unseeded players into the second round of the Sony Open Thursday with a win over Marc Gicquel.
Second-seeded Roger Federer and No. 5 Rafael Nadal advanced to the round of 32 but fourth-seeded David Ferrer fell Saturday at Indian Wells.