1. Early life and background
Mayumi Omatsu was born on July 12, 1970, in Japan. Details about her early life and formative years beyond her birth information are not extensively documented, but she developed into a prominent football player, eventually becoming a forward.
2. Club career
Mayumi Omatsu spent a significant portion of her club career playing for Nikko Securities Dream Ladies. During her tenure with the club, she was an integral part of a dominant team that achieved remarkable success in the L.League, Japan's top women's football league. The team secured three consecutive L.League championships from 1996 to 1998. Omatsu's individual performance during this period was also recognized, as she was selected for the L.League's Best Eleven for three consecutive years, aligning with the club's championship run (1996, 1997, and 1998).
However, despite their on-field success, Nikko Securities Dream Ladies faced financial difficulties, leading to the club's disbandment in 1998. Following this, Omatsu moved to OKI FC Winds in 1999. Her time with OKI FC Winds was brief, as that club also disbanded at the end of the 1999 season, leading to the conclusion of her professional club career.
3. National team career
Mayumi Omatsu's international career with the Japan women's national football team began on June 8, 1997. She made her debut in a friendly match against the Chinese national team held in Tokyo. Later that year, she participated in the 1997 AFC Women's Championship, where she played in all five matches for Japan. During the tournament, she scored her first international goal on December 5, 1997, in a match against the Guam national team in Panyu, China. Japan ultimately finished in third place in the 1997 AFC Women's Championship. Omatsu was also named to the Japanese squad for the 1999 FIFA Women's World Cup, although she did not make any appearances in matches during that tournament. By the end of 1999, she had accumulated a total of 12 appearances and scored 1 goal for the Japan national team.
3.1. International appearances and goals
Mayumi Omatsu's international appearances for the Japan women's national football team are detailed below. She played under coach Satoshi Miyauchi for all her matches.
| # | Date | Location | Venue | Opponent | Result | Coach | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | June 8, 1997 | Tokyo | National Kasumigaoka Athletics Stadium | China | 1-0 | Miyauchi | Kirin Cup |
| 2 | December 5, 1997 | Panyu | Guam | 21-0 | AFC Women's Championship | ||
| 3 | December 7, 1997 | Panyu | India | 1-0 | AFC Women's Championship | ||
| 4 | December 9, 1997 | Panyu | Hong Kong | 9-0 | AFC Women's Championship | ||
| 5 | December 12, 1997 | Guangzhou | North Korea | 0-1 | AFC Women's Championship | ||
| 6 | December 14, 1997 | Guangzhou |  Chinese Taipei | 2-0 | AFC Women's Championship | ||
| 7 | May 17, 1998 | Tokyo | National Kasumigaoka Athletics Stadium | United States | 1-2 | Kirin Cup | |
| 8 | May 21, 1998 | Hyōgo | Kobe Universiade Memorial Stadium | United States | 0-2 | Kirin Cup | |
| 9 | May 24, 1998 | Kanagawa | International Stadium Yokohama | United States | 0-3 | Kirin Cup | |
| 10 | October 24, 1998 | Seoul | South Korea | 1-1 | Friendly match | ||
| 11 | October 26, 1998 | Seoul | South Korea | 1-1 | Friendly match | ||
| 12 | May 30, 1999 | Kyoto | Kyoto Nishikyogoku Athletic Stadium | South Korea | 1-1 | Kirin Cup |
Mayumi Omatsu scored one goal in her international career:
| # | Date | Location | Opponent | Result | Match summary |
|---|---|---|---|---|---|
| 1 | December 5, 1997 | Panyu | Guam | 21-0 | 1997 AFC Women's Championship |
4. Achievements and honors
Mayumi Omatsu garnered several significant achievements and honors throughout her football playing career, both at the club level and individually.
4.1. Club
- Japanese Women's Football League (L.League)
- Champion:** 1996, 1997, 1998 (all with Nikko Securities Dream Ladies)
4.2. Individual
- Japanese Women's Football League Best Eleven
- Selected:** 1996, 1997, 1998
5. Statistics
The following table summarizes Mayumi Omatsu's national team statistics for the Japan women's national football team.
| Japan national team | ||
|---|---|---|
| Year | Apps | Goals |
| 1997 | 6 | 1 |
| 1998 | 5 | 0 |
| 1999 | 1 | 0 |
| Total | 12 | 1 |
6. Retirement
Mayumi Omatsu concluded her professional football career in 1999, coinciding with the disbandment of her last club, OKI FC Winds. After her playing career ended, information regarding her post-retirement activities is not widely available.