Roberto Arriaza - Boxing Rankings

{"name":"Roberto Arriaza","historyByOrg":{"WBA":[{"month":"2017-07","rank":9,"weightClass":"Welterweight"},{"month":"2017-08","rank":9,"weightClass":"Welterweight"},{"month":"2017-09","rank":9,"weightClass":"Welterweight"},{"month":"2017-10","rank":9,"weightClass":"Welterweight"},{"month":"2017-11","rank":11,"weightClass":"Welterweight"},{"month":"2017-12","rank":11,"weightClass":"Welterweight"}],"WBC":[],"IBF":[],"WBO":[{"month":"2018-05","rank":8,"weightClass":"Welterweight"},{"month":"2018-06","rank":6,"weightClass":"Welterweight"},{"month":"2018-07","rank":6,"weightClass":"Welterweight"},{"month":"2018-08","rank":7,"weightClass":"Welterweight"},{"month":"2018-09","rank":7,"weightClass":"Welterweight"},{"month":"2018-10","rank":8,"weightClass":"Welterweight"}]}}