A major reason why our ODI record has been awful in the last few years is because we lack a quality wicket-taking spinner in the middle overs.
One of the reasons stated to support Misbah's appointment as coach was that he'd identify quality spinners unlike Mickey. However it appears other than Usman Qadir, nobody else has been tried, and Shadab continues to remain in the squad for all formats.
Shadab was one of the stars of the 2017 Champions Trophy, and he continued in decent form until the 2018 Asia Cup where his form has nosedived since. There are many reasons. One is that he's tried to slow his speeds down considerably when he was more successful bowling quicker through the air at the start of his career. His accuracy and control over length is poor - there's always one loose delivery an over so he never builds pressure on the batsmen. And his googly which was so potent at the start is being picked easily now.
A needless controversy off the field hasn't helped either. If Misbah has Shadab's interest at heart, he'd give him a rest from international cricket so he can play a full season of QEA Trophy where he can bowl long spells and learn to set up batsmen.
Right now he is simply not elite class. These are his figures in ODIs since the start of the 2018 Asia Cup compared to other spinners who've played at least 10 matches:
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