Fitzgerald's position at full-back is taken by Seapoint's Felix Jones, who moves up from the replacements. Kyle Tonetti will move in to take the vacant spot on the bench.
The Ireland Under-20 team to play Wales Under-20 in the Six Nations championship on Friday, February 2 (7.10pm) at the Liberty Stadium, Swansea is as follows:
Ireland Under-20s:
15 - Felix Jones Seapoint/Leinster
14 - Shane Monahan Dublin University/Leinster
13 - Darren Cave Belfast Harlequins/Ulster
12 - Aidan Wynne Buccaneers/Connacht
11 - Keith Earls Thomond/Munster
10 - Ian Keatley UCD/Leinster
9 - Paul O'Donohoe UCD/Leinster
1 - David Millard NEC Harlequins/Exiles
2 - Richard Sweeney St. Mary's College/Leinster
3 - Jamie Hagan Greystones/Leinster
4 - Conor McInerney UCD/Leinster
5 - Andrew Browne Galwegians/Connacht
6 - Thomas Anderson Dungannon/Ulster
7 - David Pollock Captain QUB/Ulster
8 - Sean O'Brien UCD/Leinster
Replacements:
16 - Ger Slattery Young Munster/Munster
17 - Ruaidhri Murphy Lansdowne/Leinster
18 - Neilus Keogh UCC/Munster
19 - Tommy O'Donnell UL Bohemians/Munster
20 - David Drake Ballymena/Ulster
21 - Niall O'Connor Belfast Harlequins/Ulster
22 - Kyle Tonnetti Blackrock College/Leinster
Management:
Manager - Phil Orr
Coach - Eric Elwood
Assistant Coach - Dan McFarland
Under-20 Six Nations Fixtures:
Wales U-20 v Ireland U-20, Friday, February 2, Liberty Stadium, Swansea, 7.10pm
Ireland U-20 v France U-20, Friday, February 9, Dubarry Park, Athlone, 7.30pm
Ireland U-20 v England U-20, Friday, February 23, Dubarry Park Athlone, 7.30pm
Scotland U-20 v Ireland U-20, Friday, March 9, Falkirk Stadium, 7.30pm
Italy U-20 v Ireland U-20, Friday March 16, Santa Colomba Stadium, Benevento, kick-off tbc
Team Sponsor:
PricewaterhouseCoopers