Cricket Australia may not replace departing selector Mark Waugh, whose exit has given its high performance arm the opportunity to restructure the selection panel.

The former Test star has quit his selection role to focus on his expanding commentary duties, leaving CA without its specialist Twenty20 expert on the panel leading into the 2020 world championship. His contract is due to finish at the end of August after the tours of England and Zimbabwe.

Stepping down: Mark Waugh, here at the Scone Cup racing carnival, has resigned as an Australian cricket selector. Credit:AAP

Waugh's departure continues the tumult in the game since the ball tampering scandal cost on-field leaders Steve Smith and David Warner their jobs while coach Darren Lehmann left days later. There are also twin reviews into the cultures of the national team and head office.

Despite Waugh's success in lifting Australia up the T20 world rankings, it's unclear if CA will seek to replace him. "A decision on structure of the national selection panel or replacement for Waugh will be made in due course," CA said in a statement.