Rugby Union | Five/Six Nations | Youngest appearance

Player	Pos	Age	Team	Opposition	Ground	Date	Match
JH Blackmore	Fwd	17y 62d	Wales	v England	Cardiff	16 Jan 1909	Details
FS Hewitt	FH	17y 157d	Ireland	v Wales	Cardiff	8 Mar 1924	Details
WG Neilson	Fwd	17y 167d	Scotland	v England	Edinburgh	17 Mar 1894	Details
W Neilson	3Q	17y 173d	Scotland	v Wales	Edinburgh	7 Feb 1891	Details
JMT Quirke	SH	17y 229d	Ireland	v England	Twickenham	10 Feb 1962	Details
KG Macleod	C	18y 1d	Scotland	v Wales	Cardiff	3 Feb 1906	Details
GH McAllan	FB	18y 13d	Ireland	v Scotland	Lansdowne Road	15 Feb 1896	Details
TWJ Prydie	W	18y 25d	Wales	v Italy	Millennium Stadium	20 Mar 2010	Details
DM Grant	W	18y 36d	Scotland	v Wales	Inverleith	4 Feb 1911	Details
MW Walter	C	18y 51d	Scotland	v Ireland	Lansdowne Road	24 Feb 1906	Details
C Dourthe	C	18y 55d	France	v Scotland	Colombes	14 Jan 1967	Details
AH Bailey	C	18y 68d	Ireland	v Wales	Swansea	10 Mar 1934	Details
GPS MacPherson	C	18y 78d	Scotland	v France	Colombes	2 Jan 1922	Details
F Lasserre	FB	18y 84d	France	v Ireland	Parc des Princes	1 Jan 1914	Details
HB Wright	Fwd	18y 88d	Scotland	v Wales	Newport	3 Feb 1894	Details
WMC McEwan	Fwd	18y 102d	Scotland	v Wales	Newport	3 Feb 1894	Details
GV Stephenson	C	18y 103d	Ireland	v France	Lansdowne Road	3 Apr 1920	Details
P Dizabo	C	18y 112d	France	v Scotland	Murrayfield	24 Jan 1948	Details
NW Biggs	W	18y 119d	Wales	v Ireland	Swansea	2 Mar 1889	Details
GR Aitchison	HB	18y 121d	Scotland	v Ireland	Belfast	17 Feb 1883	Details
HCC Laird	FH	18y 134d	England	v Wales	Twickenham	15 Jan 1927	Details
EG Forrest	Fwd	18y 134d	Ireland	v Scotland	Belfast	16 Feb 1889	Details
A Domec	W	18y 139d	France	v Wales	Cardiff	23 Feb 1929	Details
L Augras-Fabre	W	18y 141d	France	v Ireland	Colombes	1 Jan 1931	Details
D Hewitt	C	18y 152d	Ireland	v England	Twickenham	8 Feb 1958	Details
RC Stafford	P	18y 181d	England	v Wales	Twickenham	20 Jan 1912	Details
RM Neill	SH	18y 185d	Scotland	v England	Blackheath	9 Mar 1901	Details
FMW Harvey	FH	18y 189d	Ireland	v Wales	Cardiff	9 Mar 1907	Details
M Rousie	SH	18y 190d	France	v Scotland	Murrayfield	24 Jan 1931	Details
RA Lloyd	FH	18y 192d	Ireland	v England	Twickenham	12 Feb 1910	Details
MF Reid	3Q	18y 198d	Scotland	v Ireland	Belfast	17 Feb 1883	Details
GO Turnbull	Fwd	18y 209d	Scotland	v Ireland	Lansdowne Road	15 Feb 1896	Details
E Williams	C	18y 213d	Wales	v England	Twickenham	17 Jan 1925	Details
JT Brett	W	18y 218d	Ireland	v Wales	Belfast	14 Mar 1914	Details
JB Allison	C	18y 221d	Ireland	v England	Lansdowne Road	4 Feb 1899	Details
DH Bowen	FB	18y 226d	Wales	v England	Swansea	16 Dec 1882	Details
A Cameron	C	18y 228d	Scotland	v Wales	Cardiff	7 Feb 1948	Details
TW Pearson	W	18y 238d	Wales	v England	Newport	3 Jan 1891	Details
JG Milton	Fwd	18y 253d	England	v Wales	Leicester	9 Jan 1904	Details
AJFK O'Reilly	C	18y 260d	Ireland	v France	Lansdowne Road	22 Jan 1955	Details
JH Lytle	Fwd	18y 261d	Ireland	v England	Blackheath	3 Feb 1894	Details
RS Stronach	Fwd	18y 266d	Scotland	v Wales	Inverleith	9 Feb 1901	Details
HST Cormac	W	18y 270d	Ireland	v England	Twickenham	12 Feb 1921	Details
BL Jones	FB	18y 285d	Wales	v England	Twickenham	21 Jan 1950	Details
FM Mills	Fwd	18y 290d	Wales	v England	Blackheath	2 Jan 1892	Details
WH Thomas	Fwd	18y 294d	Wales	v Scotland	Glasgow	10 Jan 1885	Details
KC Fyfe	W	18y 296d	Scotland	v Wales	Swansea	4 Feb 1933	Details
MC Morrison	Fwd	18y 298d	Scotland	v Wales	Cardiff	25 Jan 1896	Details
JP Wilkinson	(W)	18y 314d	England	v Ireland	Twickenham	4 Apr 1998	Details

Only the player's first appearance listed

Records include the following current or recent matches:

France v Scotland at Stade de France, Six Nations, Mar 16, 2013 [23-16 FT]

Wales v England at Millennium Stadium, Six Nations, Mar 16, 2013 [30-3 FT]

Italy v Ireland at Rome, Six Nations, Mar 16, 2013 [22-15 FT]