TOKYO: Olympic bronze medallist Saina Nehwal was knocked out of the BWF World Championships after going down to Busanan Ongbamrungphan in a hard-fought women's singles pre-quarterfinals here on Thursday.
The 32-year-old went down 17-21 21-16 13-21 to her Thai opponent, who extended her head-to-head record against the Indian to 5-3.
