India’s B Sai Praneeth defeated Korean qualifier Hyeok Jin Jeon in a tough three-game contest to enter the quarter-finals of the Thailand here on Thursday.

Praneeth beat his Korean opponent 24-22 7-21 22-20 in the men’s singles second round match. Earlier, Kiran George and Ashmita Chaliha put up gallant fights before going down in three games in the second round of their respective events. While George, Odisha Open champion, went down 22-20, 15-21, 20-22 to third seed Lee Cheuk Yiu of Hong Kong in men’s singles.