England vs Australia: Jordan Cox and Jacob Bethell make their debut in the first T20

Cox, from Essex, an aggressive 23-year-old right-hander, was part of England's Test squad for the series against Sri Lanka, which concluded on Monday, but did not play.

He was also the top scorer for men's champions Oval Invincibles in this year's Hundred, scoring 214 runs in seven matches at a strike rate of 143.62.

Born in Barbados, Bethell first appeared as part of the England U19 team that finished runners-up at the 2022 World Cup.

The left-hander, who also bowls left-arm spin, scored 166 runs in seven innings for Birmingham Phoenix in the Hundred this year and was part of the Birmingham Bears side that reached the quarter-finals of the T20 Blast.

He moved to England at the age of 13 after winning a cricket scholarship at Rugby School.

“I coached him a few times a few years ago as part of the England U19 programme and it was really clear to me that he was going to be a superstar,” Trescothick said.

“We saw it a little bit in The Hundred. We saw different points he took, catches he took and a little bit when he bowled.

“I think you'll enjoy watching him over the next few years.”

Bethell's Warwickshire teammate Dan Mousley, Hampshire seamer John Turner and left-hander Josh Hull, who made his Test debut in the third Test against Sri Lanka, are the other uncapped players in the England squad but were passed over for the opening match of the series on Wednesday.

England have dropped Jonny Bairstow and Moeen Ali from their squad (the latter has since retired from England), but seven players from their T20 World Cup squad from earlier this year have made it into the starting XI.

Salt, who will also act as wicket-keeper in Buttler's absence, will open with Will Jacks, while all-rounders Liam Livingstone and Sam Curran and bowlers Adil Rashid, Jofra Archer and Reece Topley retain their places.

Overton, from Surrey, will play only as a batsman while he recovers from a back injury.