Bangkok July 15 (IANS) India s star shuttler P.V. Sindhu lost to reigning world champion Nozomi Okuhara of Japan in straight games in the women s singles final of the Thailand Open here on Sunday. The second seeded Sindhu lost 15-21 18-21 in 40 minutes as the 2016 Olympic bronze medallist from Japan took a 6-5 lead in head-to-head record.