Defending champions England Under 20 have named their side to take on Italy in their opening game of the IRB Junior World Championship at the ECO Light Stadium in Auckland on Monday, kick off 06:35 (BST) live on Sky Sports.
Moriarty, a key figure in England's triumphant campaign last summer, starts on the flank with Gloucester team mate Billy Burns named amongst the replacements.
England last faced their Italian rivals in their final game of the U20 Six Nations, winning 52-5, but Head Coach Nick Walshe says that that result will have no bearing on this game.
"We're looking forward to kicking off this campaign, we've been in New Zealand for over a week now - the lads are acclimatised and have trained well. They've taken real ownership and can't wait to get out there.
"We did well against Italy in the Six Nations but that game has gone, we're focused on performing well in this game and kick-starting our JWC. "
Captain Callum Braley added:
"We've enjoyed our first week in Auckland but now it's time to get down to business. We're excited about the next five games - there's pressure on us, but we have to use that to our advantage and perform as well as we can."
England Under 20 starting XV against Italy
15 Aaron Morris (Bedford Blues)
14 George Catchpole (Leicester Tigers)
13 Nick Tompkins (Saracens)
12 Harry Sloan (Harlequins)
11 Nathan Earle (Saracens)
10 Sam Olver (Northampton Saints)
9 Callum Braley (Bristol Rugby, captain)
1 Danny Hobbs-Awoyemi (Northampton Saints)
2 Tom Woolstencroft (Bath Rugby)
3 Paul Hill (Leeds Carnegie)
4 Maro Itoje (Saracens)
5 Tom Ellis (Bath Rugby)
6 Ross Moriarty (Gloucester Rugby)
7 Gus Jones (London Wasps)
8 James Chisholm (Harlequins)
16 Jack Walker (Leeds Carnegie)
17 Alex Lundberg (London Wasps)
18 Biyi Alo (Saracens)
19 Charlie Ewels (Bath Rugby)
20 Joel Conlon (Exeter Cheifs)
21 Henry Taylor (Loughborough University)
22 Billy Burns (Gloucester Rugby)
23 Henry Purdy (Leicester Rugby)
Despite he and a number of his team mates playing out of position, Greig Laidlaw's four penalties were enough to help Gloucester to a 12-11 Aviva Premiership win at Sale on Friday evening. The skipper told GRTV after the game that everyone had played their part, especially the younger players.
Greig Laidlaw skippers the Cherry and Whites on Friday evening, when they head to Sale Sharks for the penultimate game of this season's Aviva Premiership. The Scottish half back spoke to GRTV about the challenge posed in Salford.
Previewing Friday night's Aviva Premiership fixture away at Sale Sharks, Head Coach Laurie Fisher acknowledged the fine home record that the Salford based outfit have built up this season, but is looking for Gloucester to round off their campaign on a high note.
Speaking to GRTV following the 16-9 victory over Exeter, Tom Savage felt that Gloucester needed that win after a tough few weeks and hopes that it acts as a springboard to a good end to the season for the Cherry and Whites.
A week on from '...letting down ourselves, the jersey and the supporters...', skipper Greig Laidlaw was full of praise for his team mates following the 16-9 Aviva Premiership win over Exeter Chiefs at Kingsholm on Friday evening.
With Gloucester looking to bounce back after exiting the European Rugby Challenge Cup last Saturday, Director of Rugby David Humphreys told the local media that the visit of Exeter Chiefs on Friday evening (kick off 7:45pm) will be a big test of character for the Cherry and Whites.
Four penalties from the boot of skipper Greig Laidlaw were just enough to see Gloucester dog out a tense 12-11 win at Sale on Friday evening and thwart the home team's attempts to finish the season unbeaten at home.
Thirteen years on from Gloucester Rugby's famous Powergen Cup victory over Northampton at Twickenham, many of the players and management from that side are gathering once more to recreate that famous day.