Sentence:  First ball of the over he gets one to swing, it's a slow hooping sort of a swing in a nice banana shape outside off and young Bairstow nearly obliges with a really poor shot, no foot movement, just a <WSD>whifty</WSD> waft at it, and lucky for him he doesn't connect. 
Meaning of the word marked with <WSD> tags:  Not steady; gusty or insubstantial.