Mattias Karlsson (back) and Kristian Karlsson of Sweden compete during the men's doubles final match against Masataka Morizono and Oshima Yuya of Japan at the 2017 ITTF World Tour Platinum Qatar Open, in Doha, capital of Qatar, Feb. 26, 2017. Masataka Morizono and Oshima Yuya won 3-1. (Xinhua/Nikku)