{"name":"Kohei Ohba","historyByOrg":{"WBA":[{"month":"2009-12","rank":9,"weightClass":"Bantamweight"},{"month":"2010-01","rank":9,"weightClass":"Bantamweight"},{"month":"2010-02","rank":9,"weightClass":"Bantamweight"},{"month":"2010-03","rank":8,"weightClass":"Bantamweight"},{"month":"2010-04","rank":9,"weightClass":"Bantamweight"},{"month":"2010-05","rank":9,"weightClass":"Bantamweight"}],"WBC":[],"IBF":[],"WBO":[{"month":"2007-04","rank":14,"weightClass":"Bantamweight"},{"month":"2007-05","rank":14,"weightClass":"Bantamweight"}]}}
Kohei Ohba is not currently in the monthly rankings.