Britain's Kyle Edmund has been knocked out of the Shanghai Masters by Stan Wawrinka after a straight-set defeat in the second round.
Edmund, 21, fought back to level the second set after losing five successive games, but ultimately lost 6-3 6-4.
The Briton had three break back points as the impressive Wawrinka served for the match, but squandered his chance.
Wawrinka, the third seed, said: "I'm really happy with my game so far. I wasn't expecting to play that well."
The Swiss, who hit 18 winners to Edmund's six, will next play either France's Giles Simon or China's Wu Di.