(AP Photo/Christophe Ena)
METZ, France (AP) Top-seeded Jo-Wilfried Tsonga served 10 aces and saved all five break points to defeat Gilles Muller of Luxembourg 7-6 (7), 6-4 at the Moselle Open on Wednesday.
Tsonga, who won the title in Metz in 2011 and 2012, was runner-up to fellow Frenchman Gilles Simon last year. He will face eighth-seeded David Goffin of Belgium or German Tobias Kamke in the quarterfinals of the indoor tournament.
Tsonga can still qualify for the ATP finals in London from Nov. 9-16 with a strong finish to the season. The Frenchman won his second ATP World Tour Masters 1000 title last month in Toronto with a straight-sets win over Roger Federer.