MONACO -- Igor Andreev of Russia and Italy's Andreas Seppi both advanced to the second round of the Monte Carlo Masters on Sunday.
Andreev had three aces in a 6-3, 6-4 win against Simone Bolelli of Italy, and Seppi was leading 7-6 (3) against Olivier Rochus when the Belgian player retired with a lower back problem.
Andreev saved four break points in the first set and broke Bolelli three times overall in the match.
Michael Berrer of Germany also advanced to the second round after beating Evgeny Korolev of Kazakhstan 6-1, 6-4.
Bernard Tomic of Austria's match against Benjamin Becker of Germany was postponed because of rain and overcast weather.
Third-ranked Rafael Nadal of Spain, seeking a sixth straight Monte Carlo title, has a bye into the second round.
Top-ranked Roger Federer is skipping the event, but second-ranked Novak Djokovic -- runner-up to Nadal at Monte Carlo last year -- and No. 4 Andy Murray are scheduled to play.
The top eight seeded players at Monte Carlo all have byes into the second round.