Lack of discipline has led Tomic and Kyrgios astray - Rosewall

FILE PHOTO - Australia's Bernard Tomic celebrates after winning his second round match against Italy's Simone Bolelli at the Australian Open tennis tournament at Melbourne Park, Australia, January 21, 2016. REUTERS/Jason Reed/File Photo

LONDON (Reuters) - A lack of discipline has led Bernard Tomic and Nick Kyrgios to hit the "self destruct" button and their behaviour is tarnishing the image of Australian tennis, Ken Rosewall told Reuters.

The 20-something tearaways have long been tipped for grand slam glory but, after several years on the tour, the sum total of their achievements is three quarter-finals at the majors. Along the way, they have also paid lots of fines for their bad behaviour.