Table tennis world No 1s Sun Yingsha and Wang Chuqin have withdrawn from another WTT tournament, although at least this time it is before reaching their respective semi-finals. The Chinese pair will not play in the Doha Champions event next week, and Sun’s absence has opened the door for Hong Kong’s Doo Hoi-kem, who is ranked 39 places below the Olympic champion, to play in Qatar. It is the second withdrawal in a week for Sun, who also pulled out of the Chinese Table Tennis Super League finals a...