Zheng Qinwen's post-injury form: Toronto qualifying loss deepens slump

Zheng Qinwen lost in the first round of Toronto qualifying to Tararudee, her sixth first-round exit this season. This follows a mixed Washington run (first-round loss to Eala) and a brief win over a Grand Slam champion. Coach Riba's return has not reversed the decline. Analysis pieces highlight technical and mental struggles, and a broader low period for Chinese tennis.