Tokyo: Lin Dan and Lee Yong Dae/Yoo Yeon Seong were winners but reigning world champions in both men's doubles and women’s singles - Mohammad Ahsan/Hendra Setiawan and Carolina Marin were beaten in a day of upsets in the quarter-finals at the Japan Open on Friday.
No. 5 seed Lin Dan of China who defeated Lee Chong Wei two days ago, handily defeated Tian Houwei 21-14, 21-18 in 59 minutes in the men's singles quarter-finals. Lin will clash with Tommy Sugiarto in the semi-finals. Indonesian Sugiarto needing less than 33 minutes to declare a 21-10, 21-5 victory over compatriot Ihsan Maulana Mustofa at the Tokyo Metropolitan Gymnasium.