# Diamond Cup Golf

The Diamond Cup Golf (アジアパシフィックオープンゴルフチャンピオンシップ ダイヤモンドカップゴルフ, Ajia pashifikku opun gorufu chanpionshippu Daiyamondo kappu gorufu) is a professional golf tournament on the Japan Golf Tour. Founded in 1969, the event has been hosted at different courses throughout Japan, including on all four major islands. In 2022, the purse was ¥100,000,000, with ¥20,000,000 going to the winner. From 2014 to 2019 the tournament was co-sanctioned by the Asian Tour.

## Winners

| Year | Tour(s) | Winner | Score | To par | Margin of victory | Runner(s)-up |
| ACN Championship ||||||||
| 2024 | JPN | Takumi Kanaya | 264 | −20 | Playoff | Ryu Hyun-woo |
| 2023 | JPN | Yuki Inamori | 271 | −17 | Playoff | Song Young-han |
| Asia Pacific Open Golf Championship Diamond Cup ||||||||
| 2022 | ASA, JPN | Shugo Imahira | 272 | −8 | 1 stroke | Hiroshi Iwata Yuto Katsuragawa Kaito Onishi Kosuke Suzuki (a) |
| Asia-Pacific Diamond Cup Golf ||||||||
| 2021 | JPN | Rikuya Hoshino | 275 | −13 | 4 strokes | Juvic Pagunsan |
| 2020 | ASA, JPN | Cancelled due to the COVID-19 pandemic | Cancelled due to the COVID-19 pandemic | Cancelled due to the COVID-19 pandemic | Cancelled due to the COVID-19 pandemic | Cancelled due to the COVID-19 pandemic |
| 2019 | ASA, JPN | Yosuke Asaji | 281 | −3 | 1 stroke | Micah Lauren Shin Ren Yonezawa (a) |
| 2018 | ASA, JPN | Yuta Ikeda | 269 | −15 | 6 strokes | Justin Harding |
| 2017 | ASA, JPN | Daisuke Kataoka | 272 | −12 | 2 strokes | Poom Saksansin Tadahiro Takayama |
| 2016 | ASA, JPN | Chan Shih-chang | 270 | −10 | 2 strokes | Ippei Koike |
| 2015 | ASA, JPN | Kim Kyung-tae (2) | 271 | −9 | 3 strokes | Yuta Ikeda Toshinori Muto |
| 2014 | ASA, JPN | Hiroyuki Fujita | 278 | −6 | 2 strokes | Kiradech Aphibarnrat Hur Suk-ho Jason Knutzon |
| Diamond Cup Golf ||||||||
| 2013 | JPN | Hideki Matsuyama | 279 | −9 | 2 strokes | Brad Kennedy Kim Hyung-sung Park Sung-joon |
| 2012 | JPN | Hiroyuki Fujita | 274 | −14 | 3 strokes | Kiradech Aphibarnrat |
| 2011 | JPN | Koumei Oda | 272 | −16 | 4 strokes | Toshinori Muto Kaname Yokoo |
| 2010 | JPN | Kim Kyung-tae | 272 | −16 | 2 strokes | Koumei Oda |
| Mitsubishi Diamond Cup Golf ||||||||
| 2009 | JPN | Takashi Kanemoto | 283 | −5 | Playoff | Brendan Jones |
| 2008 | JPN | Prayad Marksaeng | 274 | −10 | 1 stroke | Shintaro Kai |
| 2007 | JPN | Tetsuji Hiratsuka (2) | 282 | −2 | 1 stroke | Satoru Hirota Kiyoshi Miyazato |
| 2006 | JPN | Kaname Yokoo | 275 | −9 | 2 strokes | Nozomi Kawahara Toru Suzuki |
| 2005 | JPN | Jang Ik-jae | 275 | −5 | 3 strokes | Shingo Katayama Ryoken Kawagishi |
| 2004 | JPN | Tetsuji Hiratsuka | 275 | −13 | 5 strokes | Hidemasa Hoshino |
| Diamond Cup Tournament ||||||||
| 2003 | JPN | Todd Hamilton | 276 | −12 | 3 strokes | Steven Conran |
| 2002 | JPN | Tsuneyuki Nakajima (4) | 269 | −19 | 2 stokes | Tomohiro Kondo Hirofumi Miyase Christian Peña |
| 2001 | JPN | Toshimitsu Izawa | 277 | −11 | Playoff | Hiroyuki Fujita Yuji Igarashi |
| Mitsubishi Motors Tournament ||||||||
| 2000 | JPN | Hirofumi Miyase | 276 | −8 | Playoff | Toru Taniguchi |
| 1999 | JPN | Tsuyoshi Yoneyama | 268 | −16 | Playoff | Kazuhiko Hosokawa |
| Mitsubishi Galant Tournament ||||||||
| 1998 | JPN | Toru Taniguchi | 268 | −16 | 1 stroke | Kazuhiko Hosokawa |
| 1997 | JPN | Masashi Ozaki (2) | 278 | −10 | 2 strokes | Satoshi Higashi Kōki Idoki Tōru Nakamura |
| 1996 | JPN | Masashi Ozaki | 279 | −9 | Playoff | Todd Hamilton |
| 1995 | JPN | Brandt Jobe | 266 | −26 | 6 strokes | Masahiro Kuramoto |
| 1994 | JPN | Katsuyoshi Tomori | 205 | −11 | 6 strokes | Tsuneyuki Nakajima |
| 1993 | JPN | Chen Tze-chung | 277 | −11 | 4 strokes | Brian Jones Yoshi Mizumaki Tateo Ozaki |
| 1992 | JPN | Isao Aoki (2) | 277 | −11 | 4 strokes | Chen Tze-chung Saburo Fujiki |
| 1991 | JPN | Koichi Suzuki | 280 | −8 | 1 stroke | Isao Aoki Tsuneyuki Nakajima |
| 1990 | JPN | Isao Aoki | 289 | +1 | 3 strokes | Masashi Ozaki Teruo Sugihara Tsuyoshi Yoneyama |
| 1989 | JPN | Tateo Ozaki | 284 | −4 | 2 strokes | Masanobu Kimura |
| 1988 | JPN | Brian Jones (3) | 271 | −17 | Playoff | Naomichi Ozaki |
| 1987 | JPN | Brian Jones (2) | 283 | −5 | 3 strokes | Nobuo Serizawa Koichi Suzuki |
| 1986 | JPN | Tsuneyuki Nakajima (3) | 280 | −8 | 1 stroke | Chen Tze-ming |
| 1985 | JPN | Brian Jones | 272 | −12 | Playoff | Nobumitsu Yuhara |
| 1984 | JPN | Haruo Yasuda (2) | 275 | −13 | 4 strokes | Kouichi Inoue Yoshitaka Yamamoto |
| 1983 | JPN | Tsuneyuki Nakajima (2) | 278 | −10 | 6 strokes | Lu Hsi-chuen |
| 1982 | JPN | Graham Marsh (3) | 271 | −13 | Playoff | Teruo Sugihara |
| 1981 | JPN | Lu Hsi-chuen | 289 | +1 | Playoff | Tōru Nakamura Teruo Sugihara |
| 1980 | JPN | Tsuneyuki Nakajima | 276 | −12 | 4 strokes | Yoshihisa Iwashita Graham Marsh |
| 1979 | JPN | Tōru Nakamura (2) | 285 | −3 | 1 stroke | Yoshio Kusayanagi |
| 1978 | JPN | Tōru Nakamura | 280 | −8 | 1 stroke | Hsu Sheng-san Norio Suzuki |
| 1977 | JPN | Hsu Sheng-san | 277 | −11 | 3 strokes | Takaaki Kono Graham Marsh Teruo Sugihara |
| Dunlop Tournament ||||||||
| 1976 | JPN | Yoshikazu Yokoshima | 274 | −14 | 2 strokes | Isao Aoki |
| 1975 | JPN | Norio Suzuki | 278 | −10 | 2 strokes | Mya Aye |
| 1974 | JPN | Graham Marsh (2) | 272 | −16 | 3 strokes | Masashi Ozaki Teruo Sugihara |
| 1973 | JPN | Ben Arda | 280 | −8 | 4 strokes | Masashi Ozaki |
| 1972 | | Graham Marsh | 271 | −17 | 5 strokes | Ben Arda |
| 1971 | | Peter Thomson | 280 | −8 | 1 stroke | Haruo Yasuda |
| 1970 | | Haruo Yasuda | 137 | −7 | 2 strokes | Fujio Ishii Takashi Murakami |
| 1969 | | Takaaki Kono | | | | |