Stan Wawrinka admits he was encouraged by the shape of his game following his opening Shanghai Masters win over Kyle Edmund.
After being give a bye through the opener, the US Open champion, who recently lost in the final in St Petersburg, got his campaign underway with a 6-3 6-4 victory over the Brit.
He will now take on Gilles Simon in the third round after the Frenchman defeated China's Wi Du 6-2 6-2.
Wawrinka has enjoyed another stellar year, winning his third Grand Slam at Flushing Meadows and will be confident of at least matching his best ever quarter-final appearance in Shanghai.
The 31-year-old admitted after his outing on Wednesday that he was pleased with how he played and says he will take plenty of positives from his opening outing in China's second city.
Wawrinka said: "I'm really happy with my game so far. I wasn't expecting to play that well.
"I was expecting a tough match because he's improving a lot. I'm happy with the way I controlled the match, serving well. In general, there were a lot of positives for me."
tagged in Shanghai Masters