Tsonga progresses in Miami
Sixth seed Jo-Wilfried Tsonga overcame Xavier Malisse in straight sets 7-5 7-5 in the second round of the Miami Masters.
Tsonga was unable to seize the initiative early on as Malisse kept pace with the sixth seed, and the pair could not be separated until 5-5 in the opening set.
The Frenchman found the elusive breakthrough at the business end of the set, however, and secured the crucial break of serve to take it 7-5.
Tsonga was again forced to battle his way through another hard-fought set as he took the second with it having been locked at 5-5 with a solitary break of serve.
The sixth seed will next take on Philipp Kohlschreiber of Germany, who defeated Federico Gil 6-2 7-5 in their second-round match.
Ninth seed Janko Tipsarevic prevailed 7-5 6-3 against David Nalbandian, whose exploits in Indian Wells left him looking lethargic after a tight second set.
Tipsarevic will next face 18th seed Alexandr Dolgopolov, with the Ukrainian having beaten Antonio Veic 6-4 7-5 in their encounter.
Elsewhere, Gilles Simon swept past Roberto Bautista-Agut with the 13th seed winning 6-4 6-2 to secure a third-round match with Jurgen Melzer, who beat Robin Haase 7-6 3-6 6-4.
Florian Mayer beat Ivan Dodig 6-4 7-5 to set up a third-round clash with either John Isner. American Isner maintained his great run of form, which has included a win over world number one Novak Djokovic, by defeating Russian Nikolay Davydenko 2-6 6-3 6-4, highlighted by 10 aces.