Kolkata: There is no mystery behind meteoric rise of Kuldeep Yadav but purely his skill set says Piyush Chawla, who worked with the Chinaman bowler in his formative years with the UP Ranji team.

Chawla, the senior Kolkata Knight Riders spinner, said Kuldeep never stopped improving and that was key in his rise. "Kuldeep never labelled himself a mystery spinner. The term of being a mystery spinner is a myth. The main thing about Kuldeep is that he is a skillfull bowler. You need to make that skill powerful and Kuldeep is working on that," said Chawla.