Underwood was one of the foremost spin bowlers in the world for over a decade, starting from the late 1960s.
The pitch was slow, but showed significant turn for the spin bowlers.
He was of modest height and had an inclination to use his feet to charge spin bowlers.
He was a left hand bat and off spin bowler.
They have got a lot of shot-makers in their top order and some very good spin bowlers.
In 1971 Yardley began developing his abilities as a spin bowler.
"He seemed unable to pitch the steady length so essential for a spin bowler."
This is seen as an aggressive tactic for spin bowlers.
He is an athletic fielder and also a part-time spin bowler.
It is the attacking delivery of an off spin bowler.