PARIS — Novak Djokovic extended his winning streak to 19 matches and advanced to the quarterfinals of the Paris Masters by beating 14th-seeded Gilles Simon 6-3, 7-5 Thursday.
The top-ranked Serb's victory came with some sloppy serving, however, as the 10-time Grand Slam champion was broken five times.
"It happens. In sport there are days when you just lose your rhythm. You're trying a bit too much and you lose a bit of confidence," Djokovic said. "It was frustrating, I can assure you, losing four service games in (the second) set ... It hasn't happened to me for a long time.