LONDON (AP) Jo-Wilfried Tsonga earned his first win at the ATP World Tour Finals on Tuesday, defeating Mardy Fish of the United States 7-6 (4), 6-1 in his second Group B match.
Fish seemed to be slowed by the left hamstring injury, while Tsonga struggled to find consistency.
The sixth-seeded Frenchman was twice up a break in the first set before finally taking it in a tiebreaker. The second set began with another exchange of breaks but Tsonga eventually ran away with it.
Defending champion Roger Federer will face longtime rival Rafael Nadal later Tuesday at the O2 Arena in London.