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)
Defence Coach Jonny Bell admitted this week that the European Rugby Challenge Cup victory in Bayonne was a welcome one, stressed that Benetton Treviso will pose a tough test on Saturday at Kingsholm but that Gloucester are determined to deliver in front of their own fans.
Motu Matu'u is looking to make up for lost time this week as the Cherry and Whites head to Basque Country to take on Bayonne in the European Rugby Challenge Cup opener. The Samoan hooker made his first appearance in the jersey last weekend, and is hoping to contribute to the team this weekend.
Gloucester's attentions turn to Europe this weekend as they travel to Bayonne for their opening fixture of this season's European Rugby Challenge Cup. Forwards Coach Trevor Woodman told GRTV that the Cherry and Whites will be aiming to top their pool as they've done for the past two seasons, but is well aware of how tough it is to win in France.
Although understandably disappointed at seeing victory slip away at the last minute, Ben Morgan said after the game at Exeter that there were plenty of positives that Gloucester could take from the game.
Speaking after a last-gasp try from Exeter earned the Chiefs a 27-27 draw at Sandy Park on Saturday, Charlie Sharples admitted to mixed feelings. The game saw him score a try on his 200th competitive appearance for the club, but the frustration from not closing out the win was clear.
David Humphreys was minutes away from a winning interview on Saturday afternoon, but a late try from Exeter Chiefs meant the points were shared at Sandy Park. Humphreys spoke with the local media after the 27-27 draw.
Speaking to the media ahead of Saturday's Aviva Premiership fixture away at Exeter Chiefs, Director of Rugby David Humphreys reiterated that there are elements of Gloucester's game that are in good shape at present, that the performance against Bath was a step forward from Newcastle but that individual errors are costing the Cherry and Whites dear.
Centre Matt Scott, a try-scorer in Bayonne last weekend, insists that Gloucester are taking nothing for granted when they welcome Benetton Treviso to Kingsholm on Saturday in the European Rugby Challenge Cup (kick off 3pm).