Rugby Union | 1920s | Youngest appearance

Player	Pos	Age	Team	Opposition	Ground	Date	Match
P Vinci IV	FH	16y 176d	Italy	v Spain	Barcelona	20 May 1929	Details
FS Hewitt	FH	17y 157d	Ireland	v Wales	Cardiff	8 Mar 1924	Details
WJ White	W	18y 74d	Australia	v NZ XV	Wellington	5 Sep 1928	Details
GPS MacPherson	C	18y 78d	Scotland	v France	Colombes	2 Jan 1922	Details
GV Stephenson	C	18y 103d	Ireland	v France	Lansdowne Road	3 Apr 1920	Details
HCC Laird	FH	18y 134d	England	v Wales	Twickenham	15 Jan 1927	Details
A Domec	W	18y 139d	France	v Wales	Cardiff	23 Feb 1929	Details
E Williams	C	18y 213d	Wales	v England	Twickenham	17 Jan 1925	Details
HW Bryant	N8	18y 242d	Australia	v NZ XV	Sydney	13 Jun 1925	Details
HST Cormac	W	18y 270d	Ireland	v England	Twickenham	12 Feb 1921	Details
JH Gage	W	18y 331d	Ireland	v Scotland	Murrayfield	27 Feb 1926	Details
TR Hewitt	W	18y 362d	Ireland	v Wales	Cardiff	8 Mar 1924	Details
FL Williams	FH	19y 7d	Wales	v Scotland	Swansea	2 Feb 1929	Details
F Vinci III	W	19y 18d	Italy	v Spain	Barcelona	20 May 1929	Details
A Ross	H	19y 54d	Scotland	v France	Paris	1 Jan 1924	Details
WG Stewart-Morgan	C	19y 62d	Wales	v France	Swansea	26 Feb 1927	Details
W Wallace	W	19y 113d	Britain	v South Africa	Durban	16 Aug 1924	Details
WH Cerutti	P	19y 121d	Australia	v NZ XV	Wellington	5 Sep 1928	Details
WH Lewis	FH	19y 122d	Wales	v Ireland	Swansea	13 Mar 1926	Details
CHC Brown	W	19y 124d	Scotland	v England	Murrayfield	16 Mar 1929	Details
JM Bannerman	L	19y 143d	Scotland	v France	Inverleith	22 Jan 1921	Details
EN Greatorex	F	19y 146d	Australia	v NZ Maori	Sydney	25 Jun 1923	Details
JC Morley	W	19y 175d	Wales	v England	Twickenham	19 Jan 1929	Details
JD Bartlett	W	19y 183d	Wales	v Scotland	Cardiff	5 Feb 1927	Details
G Nepia	FB	19y 190d	New Zealand	v Ireland	Lansdowne Road	1 Nov 1924	Details
JAR Selby	SH	19y 194d	Scotland	v Wales	Inverleith	7 Feb 1920	Details
WM Lowry	W	19y 201d	England	v France	Twickenham	31 Jan 1920	Details
AW Ross	FB	19y 201d	Australia	v NZ XV	Sydney	13 Jun 1925	Details
DJ Cussen	W	19y 208d	Ireland	v England	Twickenham	12 Feb 1921	Details
A Lafond	W	19y 209d	France	v England	Twickenham	25 Feb 1922	Details
DS Parker	P	19y 213d	Wales	v Ireland	Cardiff	8 Mar 1924	Details
OC Crossman	(W)	19y 214d	Australia	v NZ Maori	Sydney	16 Jun 1923	Details
JA Ford	N8	19y 214d	Australia	v NZ XV	Auckland	19 Sep 1925	Details
EG Taylor	W	19y 217d	Scotland	v Wales	Cardiff	5 Feb 1927	Details
WN Ives	L	19y 242d	Australia	v NZ XV	Sydney	10 Jul 1926	Details
EG Davies	W	19y 291d	Wales	v France	Colombes	9 Apr 1928	Details
GR Beamish	N8	19y 291d	Ireland	v England	Twickenham	14 Feb 1925	Details
WE Pratten	L	19y 294d	England	v Scotland	Murrayfield	19 Mar 1927	Details
M Piquemal	FB	19y 317d	France	v Ireland	Colombes	1 Jan 1927	Details
DA John	SH	19y 325d	Wales	v Ireland	Belfast	14 Mar 1925	Details
R Ramis	C	19y 333d	France	v England	Twickenham	25 Feb 1922	Details
BC Caldwell	C	19y 334d	Australia	v NZ XV	Christchurch	15 Sep 1928	Details
W Roberts	FH	19y 334d	Wales	v England	Twickenham	19 Jan 1929	Details
CHT Towers	C	19y 345d	Australia	v NZ XV	Sydney	10 Jul 1926	Details
WA Cunningham	FH	19y 352d	Ireland	v Wales	Cardiff	13 Mar 1920	Details
EH Liddell	W	19y 351d	Scotland	v France	Colombes	2 Jan 1922	Details
WH Hemingway	W	19y 352d	Australia	v NZ XV	Dunedin	8 Sep 1928	Details
H Peacock	F	19y 354d	Wales	v Scotland	Swansea	2 Feb 1929	Details
RC Herrera	L	20y 22d	Wales	v Scotland	Swansea	7 Feb 1925	Details
JF Thompson	N8	20y 29d	Wales	v England	Twickenham	20 Jan 1923	Details

Only the player's first appearance listed

Records include the following current or recent matches:

Australia v New Zealand at Sydney, 3rd Test, Jul 27, 1929 [15-13 FT]

Australia v New Zealand at Brisbane, 2nd Test, Jul 20, 1929 [17-9 FT]

Australia v New Zealand at Sydney, 1st Test, Jul 6, 1929 [9-8 FT]