反手位下旋多球训练 Backhand loop underspin multiball training

[@damiancasanova6549]

if I could only have a coach like him... but thanks for video, you should put more from him

[@xinzhongwei8739]

要是找到这样的教练，水平提高肯定很快！

[@ugpee]

不愧是停教

[@damiancasanova6549]

@pingcool