David Warner and Steve Smith returned from their international cricket exiles to help steer Australia to a seven-wicket win over Afghanistan in the opening game of its World Cup title defence.
Warner posted an unbeaten 89 as the Aussies surpassed Afghanistan's 207 with 15 overs to spare.
Warner and Aaron Finch (66) reunited at the top of the order and shared a 96-run opening stand to get the chase started in Bristol after Australia reduced Afghanistan to 207 from 38.2 overs.
Najibullah Zadran's 49-ball half-century and 83-run, sixth-wicket stand with skipper Gulbadin Naib helped Afghanistan recover to post 207 after losing both openers for ducks.
Zampa took 3-60 off eight overs and Cummins (3-40) took the last two to finish off Afghanistan's innings in the 39th over.