is a Japanese former

professional boxer Professional boxing, or prizefighting, is regulated, sanctioned boxing. Professional boxing bouts are fought for a purse that is divided between the boxers as determined by contract. Most professional bouts are supervised by a regulatory autho ...

. She is a two-weight world champion, having held the WBC female

atomweight Atomweight (also referred to as light minimumweight, junior strawweight, junior mini-flyweight and pinweight) is a weight class in combat sports. Boxing In women's boxing and junior amateur boxing pinweight is, or has been, a Weight class (boxing), ...

title from 2008 to 2015; the WBA female atomweight title in 2015; and the WBC female strawweight title in 2017. Koseki has made a record-breaking seventeen consecutive title defenses of her WBC atomweight title.

Career

Koseki was inspired to take up boxing after watching Hiroshi Kawashima on TV. Koseki won the inaugural All-Japan women's amateur championships in 2003, as well as the second edition in 2004. After winning a third national amateur title in 2007, she decided to turn pro as women's boxing was not yet accepted as an Olympic sport. Koseki won her first three bouts. She went on to challenge Winyu Paradorngym for the inaugural WBC

world title. Winyu won the fight by

unanimous decision A unanimous decision (UD) is a winning criterion in several full-contact combat sports, such as boxing, kickboxing, Muay Thai, mixed martial arts and other sports involving striking and submission in which all three judges agree on which fighter ...

. In her next fight, Koseki moved up two weight classes to challenge for the WBC

light flyweight Light flyweight, also known as junior flyweight or super strawweight, is a weight class in boxing. Professional boxing The weight limit at light flyweight in professional boxing is 108 pounds (49 kilograms). When New York legalized boxing in 1920 ...

title, but she lost again by unanimous decision. In August 2008, Koseki rematched Paradorngym, and won the title with a round 2

knockout A knockout (abbreviated to KO or K.O.) is a fight-ending, winning criterion in several full-contact combat sports, such as boxing, kickboxing, muay thai, mixed martial arts, karate, some forms of taekwondo and other sports involving striking, a ...

Korakuen Hall is a famous sports arena in Bunkyo, Tokyo, Japan, which has hosted many notable boxing, professional wrestling, kickboxing, mixed martial arts and Lethwei matches. History On April 16, 1962, the Korakuen Hall was officially opened with ...

. In August 2014, Koseki made her fourteenth consecutive defense, beating Denise Castle with a round 8

technical knockout A knockout (abbreviated to KO or K.O.) is a fight-ending, winning criterion in several full-contact combat sports, such as boxing, kickboxing, muay thai, mixed martial arts, karate, some forms of taekwondo and other sports involving striking, a ...

. With the win, Koseki broke

Yoko Gushiken is a Japanese former professional boxer who competed from 1974 to 1981. He held the WBA light-flyweight title from 1976 to 1981, making a total of 13 successful defences. Following his retirement from boxing, he remains popular in Japan as a ' ...

's Japanese national record of 13 consecutive successful world title defenses. In October 2015, Koseki beat WBA champion Ayaka Miyao by unanimous decision to make her sixteenth defense and unify titles. Koseki won the WBC minimumweight title on 17 December 2017, defeating reigning champion Yuko Kuroki by decision. She retired on the 29 January 2018, at the age of 34.

Professional boxing record

References

External links

* {{DEFAULTSORT:Koseki, Momo 1981 births Living people Sportspeople from Tokyo Atomweight boxers Mini-flyweight boxers World Boxing Association champions World Boxing Council champions Japanese women boxers