| Year |
Competition |
Date |
Venue and location |
Surface |
Opponent |
Score |
Result |
| 2002 |
Group I, Asia/Oceania, 1st Round |
8–10 February 2002 |
Gunsan, South Korea |
Carpet, Indoor |
South Korea |
3–2 |
Won |
| Group I, Asia/Oceania, 2nd Round |
5–7 April 2002 |
Muang-Thong-Thani Complex, Bangkok, Thailand |
Hard, Outdoor |
Thailand |
1–4 |
Loss |
| 2003 |
Group I, Asia/Oceania, 1st Round |
7–9 February 2003 |
R.K. Khanna Tennis Stadium, New Delhi, India |
Grass (Grass), Outdoor |
India |
1–4 |
Loss |
| Group I, Asia/Oceania, 1st Round Relegation Play-offs |
4–6 April 2003 |
Toyota City Gymnasium, Toyota, Aichi, Japan |
Carpet, Indoor |
Pakistan |
5–0 |
Won |
| 2004 |
Group I, Asia/Oceania, 1st Round |
6–8 February 2004 |
Gelora Bung Karno Tennis Stadium, Jakarta, Indonesia |
Hard, Outdoor |
Indonesia |
3–2 |
Won |
| Group I, Asia/Oceania, 2nd Round |
9–11 April 2004 |
Utsubo Tennis Center, Osaka, Japan |
Hard, Outdoor |
India |
3–2 |
Won |
| 2004 Davis Cup World Group play-offs |
24–26 September 2004 |
Club Naval de Campo Las Salinas, Viña del Mar, Chile |
Clay, Outdoor |
Chile |
0–5 |
Loss |
| 2005 |
Group I, Asia/Oceania, 1st Round |
4–6 March 2005 |
Soleada Club, Taoyuan, Taiwan |
Hard (rebound ace), outdoor |
Chinese Taipei |
2–3 |
Loss |
| Group I, Asia/Oceania, 1st Round Relegation Play-offs |
15–17 July 2005 |
Namihaya Dome, Kadoma, Osaka, Japan |
Carpet (Taraflex), Indoor |
Thailand |
4–1 |
Won |
| 2006 |
Group I, Asia/Oceania, 1st Round |
10–12 February 2006 |
Namihaya Dome, Kadoma, Osaka, Japan |
Carpet (Taraflex), Indoor |
China |
5–0 |
Won |
| Group I, Asia/Oceania, Semifinals |
7–9 April 2006 |
Rama Gardens Hotel, Bangkok, Thailand |
Hard (Plexipave), Outdoor |
Thailand |
2–3 |
Loss |
| 2007 |
Group I, Asia/Oceania, 1st Round |
9–11 February 2007 |
Beijing International Tennis Center, Beijing, China |
Hard (rebound ace), indoor |
China |
4–1 |
Won |
| Group I, Asia/Oceania, Semifinals |
6–8 April 2007 |
Namihaya Dome, Kadoma, Osaka, Japan |
Carpet (Taraflex), Indoor |
Thailand |
5–0 |
Won |
| World Group, play-offs |
21–23 September 2007 |
Namihaya Dome, Kadoma, Osaka, Japan |
Carpet (Taraflex), Indoor |
Romania |
2–3 |
Loss |
| 2008 |
Group I, Asia/Oceania, 1st Round |
8–10 February 2008 |
Rizal Memorial Tennis Center, Manila, Philippines |
Hard (Truflex Acrylic), Outdoor |
Philippines |
5–0 |
Won |
| Group I, Asia/Oceania, Semifinals |
11–13 April 2008 |
R.K. Khanna Tennis Stadium, New Delhi, India |
Grass (Grass), Outdoor |
India |
2–3 |
Loss |
| 2009 |
Group I, Asia/Oceania, 1st Round |
6–8 March 2009 |
Namihaya Dome, Kadoma, Osaka, Japan |
Carpet (Taraflex), Indoor |
China |
5–0 |
Won |
| Group I, Asia/Oceania, Semifinals |
8–10 May 2009 |
Sport Complex Pahlavon, Namangan, Uzbekistan |
Clay, Indoor |
Uzbekistan |
2–3 |
Loss |
| 2010 |
Group I, Asia/Oceania, 1st Round |
5–7 March 2010 |
Namihaya Dome, Kadoma, Osaka, Japan |
Carpet (Taraflex), Indoor |
Philippines |
5–0 |
Won |
| Group I, Asia/Oceania, Semifinals |
7–9 May 2010 |
Queensland Tennis Centre, Brisbane, Australia |
Clay, Outdoor |
Australia |
0–5 |
Loss |
| 2011 |
Group I, Asia/Oceania, 1st Round |
4–6 March 2011 |
Plantation Bay Resort & Spa, Lapu-Lapu City, Philippines |
Clay, Outdoor |
Philippines |
3–1 |
Won |
| Group I, Asia/Oceania, Semifinals |
8–10 July 2011 |
Bourbon Beans Dome, Miki, Hyōgo, Japan |
Hard (Acrylic), Indoor |
Uzbekistan |
4–1 |
Won |
| World Group, play-offs |
16–18 September 2011 |
Ariake Coliseum, Tokyo, Japan |
Hard (Deco Turf II), Outdoor |
India |
4–1 |
Won |
| 2012 |
World Group, 1st Round |
10–12 February 2012 |
Bourbon Beans Dome, Miki, Hyōgo, Japan |
Hard (DecoTurf), Indoor |
Croatia |
2–3 |
Loss |
| World Group, play-offs |
14–16 September 2012 |
Ariake Coliseum, Tokyo, Japan |
Hard (DecoTurf), Outdoor |
Israel |
2–3 |
Loss |
| 2013 |
Group I, Asia/Oceania, 1st Round |
1–3 February 2013 |
Ariake Coliseum, Tokyo, Japan |
Hard (DecoTurf), Indoor |
Indonesia |
5–0 |
Won |
| Group I, Asia/Oceania, Semifinals |
5–7 April 2013 |
Ariake Coliseum, Tokyo, Japan |
Hard (DecoTurf), Indoor |
South Korea |
3–2 |
Won |
| World Group, play-offs |
13–15 September 2013 |
Ariake Coliseum, Tokyo, Japan |
Hard (DecoTurf), Indoor |
Colombia |
3–2 |
Won |
| 2014 |
World Group, 1st Round |
31 January–2 February 2014 |
Ariake Coliseum, Tokyo, Japan |
Hard (DecoTurf), Indoor |
Canada |
4–1 |
Won |
| World Group, Quarterfinals |
4–6 April 2014 |
Ariake Coliseum, Tokyo, Japan |
Hard (DecoTurf), Indoor |
Czech Republic |
0–5 |
Loss |
| 2015 |
World Group, 1st Round |
6–8 March 2015 |
Doug Mitchell Thunderbird Sports Centre, Vancouver, Canada |
Hard (Premier), Indoor |
Canada |
2–3 |
Loss |
| World Group, play-offs |
18–20 September 2015 |
Club Campestre, Pereira, Colombia |
Clay (Red Clay), Outdoor |
Colombia |
3–2 |
Won |
| 2016 |
World Group, 1st Round |
4–6 March 2016 |
Barclaycard Arena, Birmingham, Great Britain |
Hard (GreenSet Cushion), Indoor |
Great Britain |
1–3 |
Loss |
| World Group, play-offs |
16–18 September 2016 |
Utsubo Tennis Center, Osaka, Japan |
Hard, Outdoor |
Ukraine |
5–0 |
Won |
| 2017 |
World Group, 1st Round |
3–5 February 2017 |
Ariake Coliseum, Tokyo, Japan |
Hard (DecoTurf), Indoor |
France |
1–4 |
Loss |
| World Group, play-offs |
15–18 September 2017[a] |
Utsubo Tennis Center, Osaka, Japan |
Hard (DecoTurf), Outdoor |
Brazil |
3–1 |
Won |
| 2018 |
World Group, 1st Round |
2–4 February 2018 |
Morioka Takaya Arena, Morioka, Japan[5] |
Hard (GreenSet Pro), Indoor |
Italy |
1–3 |
Loss |
| World Group, play-offs |
14–16 September 2018 |
Utsubo Tennis Center, Osaka, Japan |
Hard (DecoTurf), Outdoor |
Bosnia and Herzegovina |
4–0 |
Won |
| 2019 |
Davis Cup qualifying round |
1–2 February 2019 |
Guangdong Olympic Tennis Centre, Guangzhou, China |
Hard (TOPLUS MC Pro System), Outdoor |
China |
3–2 |
Won |
| Finals, Round-Robin Group A |
19 November 2019 |
Caja Mágica, Madrid, Spain |
Hard, Indoor |
France |
1–2 |
Loss |
| Finals, Round-Robin Group A |
20 November 2019 |
Caja Mágica, Madrid, Spain |
Hard, Indoor |
Serbia |
0–3 |
Loss |
| 2020–21 |
Davis Cup qualifying round |
6–7 March 2020 |
Bourbon Beans Dome, Miki, Japan |
Hard (DecoTurf), Indoor |
Ecuador |
0–3 |
Loss |
| Davis Cup World Group I |
5–6 March 2021 |
Pakistan Sports Complex, Islamabad, Pakistan |
Grass, Outdoor |
Pakistan |
0–4 |
Won |