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 50 minutes as the 2016 Olympic bronze medallist took a 6-5 lead in head-to-head record. While fourth-seeded Okuhara got a prize money of $26,250, Sindhu, a three-time World Championship medallist, bagged $13,300.