Mitchell Johnson senses it's only a matter of time before Mitchell Starc starts to dominate test cricket.
Johnson would know, having grabbed the Ashes and title of ICC cricketer of the year after lording it over England's batsmen in 2013-14.
It would be only natural for Starc to have previously had a little self-doubt with the red ball in hand, given he was dropped 11 times in a career spanning 15 tests.
But having been crowned player of the World Cup after snaring 22 wickets at an average of 10.18, that's unlikely to be an issue now.
"I know what it was like when I first started, you're trying to find your rhythm and trying to find your place," Johnson said of his fellow left-armer.