Chinese table tennis star Wang Chuqin has acknowledged he is in a “slump”, taking to social media after exiting the WTT Champions Frankfurt in the round of 16 following a 36-day rest and adjustment period. The tournament, which concluded on Sunday with Japan sweeping both singles titles for a second consecutive edition, marked China’s worst Champions-tier result this year, with none of the mainland’s nine entrants reaching the semi-finals. China claimed just one title across six WTT Champions...