Fullback
Player Age Opposition Ground Date Match
A Goromaru 19y 89d v Canada Tokyo 29 May 2005 Details
T Kasahara 20y 197d v Canada Osaka 31 Jan 1932 Details
R Noguchi 20y 290d v Korea Kanagawa 30 Apr 2016 Details
CED Loamanu 21y 130d v Wales Millennium Stadium 20 Sep 2007 Details
S Ozaki 21y 285d v Korea Incheon 22 Apr 2017 Details
T Kurihara 21y 289d v USA Osaka 27 May 2000 Details
Y Fujita 21y 319d v USA Sacramento 24 Jul 2015 Details
R Matsuda 22y 53d v Scotland Tokyo 25 Jun 2016 Details
O Yatsuhashi 22y 95d v USA San Francisco 6 Jul 1996 Details
T Matsuda 22y 149d v Hong Kong Seoul 26 Sep 1992 Details

Wing
Player Age Opposition Ground Date Match
Y Fujita 18y 240d v UAE Fukuoka 5 May 2012 Details
CED Loamanu 18y 338d v Uruguay Montevideo 16 Apr 2005 Details
T Masuho 19y 95d v USA Chicago 4 May 1991 Details
Y Yoshida 19y 226d v Oxford Uni Tokyo 1 Oct 1988 Details
T Yasuda 20y 1d v Korea Incheon 21 May 2016 Details
A Moeakiola 20y 112d v Hong Kong Tokyo 28 May 2016 Details
C Matsui 20y 158d v Korea Incheon 18 Apr 2015 Details
K Fukuoka 20y 239d v Korea Tokyo 4 May 2013 Details
L Oto 20y 329d v Hong Kong Seoul 26 Sep 1992 Details
D Ohata 20y 364d v Korea Taipei 9 Nov 1996 Details

Centre
Player Age Opposition Ground Date Match
S Hirao 19y 129d v NZ Unis Pukekohe 30 May 1982 Details
D Maeda 19y 173d v Korea Incheon 21 May 2016 Details
Y Motoki 19y 250d v USA Chicago 4 May 1991 Details
S Hirao 20y 354d v Canada Osaka 31 Jan 1932 Details
H Teranishi 21y 25d v Aust Unis Fukuoka 4 Mar 1956 Details
M Fujii 21y 27d v British Col Vancouver 24 Sep 1930 Details
KM Matsushima 21y 93d v Samoa Tokyo 30 May 2014 Details
Y Uryu 21y 126d v Korea Tokyo 13 May 2001 Details
Y Imamura 21y 167d v Arabian Gulf Tokyo 16 Apr 2006 Details
T Otsuka 21y 220d v Oxford Uni Osaka 1 Oct 1952 Details

Fly-half
Player Age Opposition Ground Date Match
K Ono 20y 53d v Australia A Townsville 9 Jun 2007 Details
K Morita 20y 114d v Canada Tokyo 30 May 2004 Details
S Aoki 21y 122d v Scotland XV Tokyo 28 May 1989 Details
K Iwabuchi 21y 124d v Hong Kong Hong Kong 3 May 1997 Details
S Onishi 21y 191d v USA Osaka 27 May 2000 Details
K Hirose 21y 196d v Korea Kuala Lumpur 29 Oct 1994 Details
Y Matsuo 22y 113d v British Col Vancouver 12 May 1976 Details
S Hirao 22y 132d v Ireland XV Tokyo 2 Jun 1985 Details
K Matsuo 22y 145d v USA Torrance 31 May 1986 Details
H Tatekawa 22y 198d v Samoa Tokyo 17 Jun 2012 Details

Scrum-half
Player Age Opposition Ground Date Match
M Horikoshi 19y 309d v Oxford Uni Tokyo 1 Oct 1988 Details
Y Matsuo 20y 307d v Sri Lanka Colombo 23 Nov 1974 Details
M Wada 21y 45d v NZ Unis Osaka 16 Feb 1936 Details
K Uchida 21y 77d v UAE Dubai 10 May 2013 Details
R Imazato 21y 361d v Hong Kong Tokyo 9 Mar 1969 Details
H Nishida 22y 7d v Fiji Ehime 8 May 1994 Details
Y Yatomi 22y 72d v Hong Kong Tokyo 29 Apr 2007 Details
H Tsuchiya 22y 290d v Oxford Uni Tokyo 5 Oct 1952 Details
H Shukuzawa 23y 42d v England U23 Twickenham 13 Oct 1973 Details
W Murata 23y 92d v USA Blaine 27 Apr 1991 Details

Prop
Player Age Opposition Ground Date Match
R Yamamura 20y 346d v C Taipai Tainan 21 Jul 2002 Details
S Natsui 21y 46d v Oxford Uni Tokyo 5 Oct 1952 Details
O Ota 21y 69d v USA Torrance 31 May 1986 Details
T Kimura 21y 97d v France XV Osaka 30 Sep 1984 Details
S Nakamura 21y 278d v Singapore Singapore 23 May 2009 Details
T Watanabe 21y 360d v Korea Incheon 21 May 2016 Details
M Takura 22y 240d v Scotland XV Tokyo 28 May 1989 Details
K Takahashi 22y 269d v Korea Colombo 27 Oct 1990 Details
Y Iwama 22y 311d v Korea Aomori 2 Jul 2000 Details
K Kasai 22y 328d v Canada Tokyo 1 May 1999 Details

Hooker
Player Age Opposition Ground Date Match
T Fujita 19y 251d v Netherlands Hilversum 4 Oct 1980 Details
T Yagai 21y 89d v British Col Vancouver 24 Sep 1930 Details
E Shiga 21y 329d v British Col Osaka 15 Mar 1959 Details
T Kizu 22y 296d v Kazakhstan Bangkok 7 May 2011 Details
A Sakate 22y 335d v Korea Incheon 21 May 2016 Details
R Arita 23y 38d v Kazakhstan Almaty 28 Apr 2012 Details
M Sakata 23y 231d v Canada Vancouver 13 Jul 1996 Details
S Horie 23y 298d v Canada Miyagi 15 Nov 2009 Details
M Kunda 23y 359d v USA Tokyo 23 Sep 1990 Details
T Hirose 24y 101d v Ireland Stud Tokyo 3 Oct 1987 Details

Lock
Player Age Opposition Ground Date Match
Y Sakuraba 20y 5d v Scotland XV Murrayfield 27 Sep 1986 Details
T Akatsuka 20y 242d v Fiji Ehime 8 May 1994 Details
T Hayashi 20y 254d v France XV Toulouse 19 Oct 1980 Details
M Chida 21y 99d v NZ Unis Tokyo 30 Mar 1980 Details
S Kurihara 21y 315d v Scotland XV Murrayfield 27 Sep 1986 Details
Y Watanabe 21y 351d v Hong Kong Hong Kong 18 May 1996 Details
A Oyagi 22y 41d v Ox & Camb Tokyo 25 Sep 1983 Details
Y Kitagawa 22y 264d v Hong Kong Hong Kong 2 May 2009 Details
Y Kawase 22y 349d v NZ Unis Pukekohe 30 May 1982 Details
K Usami 23y 53d v Korea Fukuoka 9 May 2015 Details

Flanker
Player Age Opposition Ground Date Match
M Furukawa 19y 167d v Korea Incheon 21 May 2016 Details
MG Leitch 20y 46d v USA Tokyo 22 Nov 2008 Details
K Miyamoto 20y 206d v England XV Twickenham 11 Oct 1986 Details
T Tsuchiya 20y 242d v Oxford Uni Tokyo 5 Oct 1952 Details
Y Sakuraba 21y 33d v NZ XV Osaka 25 Oct 1987 Details
T Nozawa 21y 47d v Samoa Apia 10 Jun 2000 Details
ST Latu 21y 275d v USA Brisbane 24 May 1987 Details
J Komura 22y 193d v Hong Kong Seoul 26 Sep 1992 Details
H Kiso 22y 201d v C Taipai Tainan 27 May 2001 Details
H Kajihara 22y 242d v Scotland XV Tokyo 28 May 1989 Details

No. 8
Player Age Opposition Ground Date Match
TM Tatafu 20y 119d v Korea Kanagawa 30 Apr 2016 Details
ST Latu Mailangi 21y 216d v Hong Kong Seoul 26 Sep 1992 Details
ST Latu 21y 285d v Australia Sydney 3 Jun 1987 Details
E Yamamoto 23y 23d v Korea Ulsan 13 Oct 2002 Details
S Matsuhashi 23y 156d v Korea Tokyo 29 Apr 2017 Details
H Yamamoto 23y 186d v Korea Incheon 21 May 2016 Details
MG Leitch 23y 218d v Korea Seoul 12 May 2012 Details
M Washiya 23y 268d v Canada Markham 15 Jul 2000 Details
K Himeno 23y 324d v Italy Kobe 16 Jun 2018 Details
M Toyota 24y 0d v Kazakhstan Tokyo 15 May 2010 Details

Substitute (excluding unused substitute)
Player Pos Age Opposition Ground Date Match
CED Loamanu (W) 18y 360d v Hong Kong Tokyo 8 May 2005 Details
A Goromaru (FB) 19y 46d v Uruguay Montevideo 16 Apr 2005 Details
F Makisi (F) 19y 122d v Korea Incheon 21 May 2016 Details
D Maeda (FH) 19y 152d v Korea Kanagawa 30 Apr 2016 Details
K Shomen (FH) 19y 165d v Korea Ulsan 13 Oct 2002 Details
M Furukawa (N8) 19y 174d v Hong Kong Tokyo 28 May 2016 Details
Y Fujita (W) 19y 231d v Hong Kong Hong Kong 27 Apr 2013 Details
Y Motoki (C) 19y 243d v USA Blaine 27 Apr 1991 Details
K Fujii (L) 19y 306d v Samoa Apia 10 Jun 2000 Details
R Yamamura (P) 19y 312d v Wales Tokyo 17 Jun 2001 Details

Only the player's first appearance listed; Only includes matches where the player starts in the respective position, and excludes matches as a substitute.

Records include the following current or recent matches:
Japan v South Africa at Tokyo, Rugby World Cup Quarter final, Oct 20, 2019 [3-26 FT]
Japan v Scotland at Yokohama, Rugby World Cup, Oct 13, 2019 [28-21 FT]
Japan v Samoa at Aichi, Rugby World Cup, Oct 5, 2019 [38-19 FT]