Gael Monfils beats Paul-Henri Mathieu in Stuttgart, to face Florian Mayer

Gael Monfils of France defeated compatriot Paul-Henri Mathieu 7-6 (0), 6-4 on Tuesday to advance to the second round of the Mercedes Cup.

Monfils had 16 aces to set up a meeting with sixth-seeded Florian Mayer, who defeated another German, Andreas Beck, 6-4, 3-6, 6-1.

Victor Hanescu rallied to beat Dmitry Tursunov of Russia 3-6, 6-3, 7-6 (7) in 2 hours, 25 minutes.

The Romanian will next face Brazilian Thomaz Bellucci, who defeated seventh-seeded Lukas Rosol of the Czech Republic 6-4, 6-4. It was Rosol's third consecutive loss.

Nikolay Davydenko of Russia rallied to beat Spain's Daniel Munoz-De La Nava 6-7 (6), 6-3, 6-4.

Leonardo Mayer of Argentina defeated Spain's Pablo Andujar 3-6, 7-6 (5), 7-6 (5) in 2 hours, 55 minutes.