Francisco Sierra - Boxing Rankings

{"name":"Francisco Sierra","historyByOrg":{"WBA":[],"WBC":[],"IBF":[{"month":"2011-05","rank":15,"weightClass":"Super Middleweight"},{"month":"2011-06","rank":15,"weightClass":"Super Middleweight"}],"WBO":[{"month":"2011-01","rank":10,"weightClass":"Super Middleweight"},{"month":"2011-02","rank":9,"weightClass":"Super Middleweight"},{"month":"2011-03","rank":9,"weightClass":"Super Middleweight"},{"month":"2011-04","rank":9,"weightClass":"Super Middleweight"},{"month":"2011-05","rank":13,"weightClass":"Super Middleweight"},{"month":"2011-06","rank":12,"weightClass":"Super Middleweight"}]}}