American Michael Mmoh reached the quarter-finals of the Montpellier Open by winning against Frenchman Alexandre Muller, the No 7 seed, 6-4, 6-4 at the Sud de France Arena.

Mmoh, ranked No 133, will play the winner of the match between Dane Holger Rune, the top seed, and Spanish qualifier Pablo Llamas Ruiz next.

The American defeated Frenchman Benjamin Bonzi (6-3, 7-5) ahead of his victory.

In the previous round of the Montpellier tournament, Muller, ranked No 71, won against qualifier Antoine Escoffier (7-6 (4), 6-3).

Montpellier ATP 250, other second-round results (Sud de France Arena, hard, EUR 579.320, most recent results first):

• Alexander Shevchenko vs. Gregoire Barrere
• Arthur Cazaux vs. Felix Auger-Aliassime
• Borna Coric vs. Pedro Martinez
• Holger Rune vs. Pablo Llamas Ruiz
• Denis Shapovalov vs. Alexander Bublik
• Benoit Paire vs. Harold Mayot