a result of his selection for Australia A and one-day form, Carey went into the 2017–18 Sheffield Shield season as one of the main contenders to play for Australia in the 2017–18 Ashes series. Though he had only played 18 first-class matches prior to the start of the season, Carey was considered the best young wicket-keeper in Australia. He had an opportunity to score runs and impress selectors in the first two matches, but he failed to score above fifty before the squad was named, coming close when he scored 46 not out before being stranded without any partners left against Western Australia. He was overlooked for the team, with Tim Paine being chosen instead. Despite his failure to make it into the national team, Carey scored his maiden first-class century when he made 139 for South Australia against Queensland. In May 2019, Carey was signed by Sussex County Cricket Club to play in the 2019 t20 Blast tournament in England. In the 2020 IPL auction, he was bought by the Delhi Capitals ahead of the 2020 Indian Premier League. International career Carey's 2017–18 Big Bash League season form saw him make his One Day International (ODI) debut for Australia, replacing an ill Tim Paine on 19 January 2018. Later the same month, he was named in Australia's Twenty20 International (T20I) squad for the 2017–18 Trans-Tasman Tri-Series, which started in February 2018. He made his T20I debut for Australia against New Zealand on 3 February 2018. In April 2018, Carey was awarded a national contract by Cricket Australia for the 2018–19 season. On 8 May 2018, he was named vice-captain of the Australia T20 team. In April 2019, he was named in Australia's squad for the 2019 Cricket World Cup. He scored 375 runs from 10 matches and was Australia's 4th highest run scorer during the World Cup, behind Steve Smith, Aaron Finch and David Warner. He also set the record for most catches by a wicket-keeper in a single edition of the World Cup, with 18 catches. He also stumped two batsmen to take his tally to an overall 20 dismissals. Following the World Cup, the International Cricket Council (ICC) named Carey as the rising star of the squad. He was named as wicket-keeper in the 'Team of the Tournament' for the 2019 World Cup by the ICC. On 16 July 2020, Carey was named in a 26-man preliminary