Saina, ranked 28, lost to the World number three 21-17 13-21 16-21 after a battle of 51 minutes.
The Hyderabadi gave a tough fight to Chen to go up 1-0 after winning the first game. But she squandered the advantage.
Chen set up a quarterfinal clash with P I Hongyan of France, who got the better of Juliane Schenk of Germany 21-12 21-8.
(source: IndiaTimes)
