Luke Thompson and Tommy Makinson have been rewarded for excellent Super League campaigns by being selected in the England squad.
The duo join teammates Jonny Lomax, Mark Percival and James Roby in the 19-man party that will travel to Denver.
England take on New Zealand next Saturday.
Thompson was named in the Knights Squad at the start of the year – but his form has led him to being called up to the senior squad.
The 23-year-old has gone for 2,167 metres to lead Super League.
The squad also includes a recall for South Sydney Rabbitohs George Burgess, who will once again join his brothers Sam and Thomas in the senior squad, after missing out on selection for the 2017 World Cup.
The Burgess brothers are three of six players joining up from the NRL and will be joined by James Graham, Elliott Whitehead and Gareth Widdop, who all played in England’s narrow World Cup Final loss to Australia last year.
John Bateman (Wigan Warriors, Bradford Dudley Hill)
George Burgess (South Sydney Rabbitohs, Dewsbury Moor)
Sam Burgess (South Sydney Rabbitohs, Dewsbury Moor)
Thomas Burgess (South Sydney Rabbitohs, Dewsbury Moor)
Jake Connor (Hull FC, Siddal)
James Graham (St George Illawarra Dragons, Blackbrook)
Ryan Hall (Leeds Rhinos, Oulton Raiders)
Chris Hill (Warrington Wolves, New Springs Lions)
Jonny Lomax (St Helens, Orrell St James)
Tommy Makinson (St Helens, Wigan St Judes)
Jermaine McGillvary (Huddersfield Giants, Deighton Juniors)
Sean O’Loughlin (Wigan Warriors, Wigan St Patricks)
Mark Percival (St Helens, Halton Farnworth Hornets)
Stefan Ratchford (Warrington Wolves, Wigan St Patricks)
James Roby (St Helens, Blackbrook)
Luke Thompson (St Helens, Bold Miners)
Gareth Widdop (St George Illawarra Dragons, Kings Cross)
George Williams (Wigan Warriors, Wigan St Patricks)
Elliott Whitehead (Canberra Raiders, West Bowling)
England v New Zealand will be played at the Sports Authority Field at Mile High, Denver, on Saturday June 23 (9:10pm) and fans in the UK can watch live from 9pm on BBC Two.