Lowest winning score
-24
2001
Highest winning score
+1
1985
Avg winning score
-13.5
18 editions
Avg winning margin
1.8
18 editions
| Year | Tournament | Tour | Winner | Purse |
|---|
| 2004 | Casio World Open | Japan Golf Tour | David Smail | JPY 140,000,000 |
| 2003 | Casio World Open | Japan Golf Tour | Katsumune Imai | JPY 140,000,000 |
| 2002 | Casio World Open | Japan Golf Tour | David Smail | JPY 140,000,000 |
| 2001 | Casio World Open | Japan Golf Tour | Kiyoshi Murota | JPY 140,000,000 |
| 2000 | Casio World Open | Japan Golf Tour | Toru Suzuki | JPY 140,000,000 |
| 1999 | Casio World Open | Japan Golf Tour | Tsuyoshi Yoneyama | JPY 140,000,000 |
| 1998 | Casio World Open | Japan Golf Tour | Brian Watts | JPY 150,000,000 |
| 1997 | Casio World Open | Japan Golf Tour | Mitsutaka Kusakabe | JPY 150,000,000 |
| 1996 | Casio World Open | Japan Golf Tour | Paul Stankowski | JPY 150,000,000 |
| 1995 | Casio World Open | Japan Golf Tour | Seiki Okuda | JPY 150,000,000 |
| 1994 | CASIO WORLD OPEN | Japan Golf Tour | Robert Gamez | JPY 150,000,000 |
| 1993 | CASIO WORLD OPEN | Japan Golf Tour | Tom Lehman | JPY 150,000,000 |
| 1992 | CASIO WORLD OPEN | Japan Golf Tour | Isao Aoki | JPY 150,000,000 |
| 1989 | CASIO WORLD OPEN | Japan Golf Tour | Isao Aoki | JPY 100,000,000 |
| 1988 | CASIO WORLD OPEN | Japan Golf Tour | Larry Mize | JPY 90,000,000 |
| 1987 | CASIO WORLD OPEN | Japan Golf Tour | David Ishii | JPY 90,000,000 |
| 1986 | CASIO WORLD OPEN | Japan Golf Tour | Scott Hoch | JPY 85,000,000 |
| 1985 | CASIO WORLD OPEN | Japan Golf Tour | Hubert Green | JPY 80,000,000 |