Australian bowling attack stands among Test cricket's greatest, says Greg Chappell
Former Test great compares Cummins-led quartet to West Indian, Pakistani and past Australian pace units
Australia's current Test bowling quartet of Pat Cummins, Mitchell Starc, Josh Hazlewood and Nathan Lyon ranks among the best in the world over the last 50 years, according to former Test great Greg Chappell, who says the group has taken an unprecedented number of wickets as a four-man unit and sits in the same pantheon as the great West Indian attacks of the late 1970s.