The seventh seed, who had also defeated the 20-year-old at the same stage of the Hong Kong Open earlier this year, prevailed 23\u201321, 21\u201311 to book a semifinal meeting with second seed Chou Tien Chen of Chinese Taipei.<\/p>\r\n\r\n
World No. 9 Chou, the 2018 Asian Games silver medallist, battled past Farhan Alwi 13\u201321, 23\u201321, 21\u201316 in a gruelling contest that stretched to 1 hour and 23 minutes. Alwi had earlier shocked Indian veteran HS Prannoy in the round of 16.<\/p>\r\n\r\n
Sen, 26, who reached the Hong Kong Open final earlier this year but is still chasing his first title of the season, faced stiff resistance from Ayush Shetty in the opening game. Trailing 6\u20139, Sen strung together four points from 9\u201310 to move ahead 13\u201310. Shetty \u2014 the US Open Super 300 champion \u2014 kept clawing back in a fluctuating opener, even drawing level at 21\u201321, before Sen finally sealed it.<\/p>\r\n\r\n
World No. 9 Chou, the 2018 Asian Games silver medallist, battled past Farhan Alwi 13\u201321, 23\u201321, 21\u201316 in a gruelling contest that stretched to 1 hour and 23 minutes. Alwi had earlier shocked Indian veteran HS Prannoy in the round of 16.<\/p>\r\n\r\n
In men\u2019s doubles, top seeds Satwiksairaj Rankireddy and Chirag Shetty, who cruised into the quarterfinals with a comfortable win over Su Ching Heng and Wu Guan Xun of Chinese Taipei, lost to fifth seeds Indonesians Fajar Alfian and Muhammad Shohibul Fikri 19-21, 15-21 to bow out of the tournament.<\/p>\r\n\r\n