Australia’s selectors have shown they are willing to pick young players in purple patches after the New South Wales opener David Warner was promoted to the national Twenty20 side to face South Africa. Warner, a powerful 22-year-old left-hander, has had a boom start to the domestic season, scoring 343 FR Cup runs at a strike-rate of 133.98, and will be on trial at the MCG on Sunday for further engagements with the one-day team.