Ryo Matsumoto - Boxing Rankings

{"name":"Ryo Matsumoto","historyByOrg":{"WBA":[],"WBC":[],"IBF":[{"month":"2021-05","rank":12,"weightClass":"Featherweight"},{"month":"2021-06","rank":12,"weightClass":"Featherweight"},{"month":"2021-07","rank":12,"weightClass":"Featherweight"},{"month":"2021-08","rank":12,"weightClass":"Featherweight"},{"month":"2021-09","rank":12,"weightClass":"Featherweight"},{"month":"2021-10","rank":11,"weightClass":"Featherweight"}],"WBO":[]}}

Previously ranked

Six-Month Ranking History (Data)

IBF six-month history
Month	Rank	Weight Class
2021-05	#12	Featherweight
2021-06	#12	Featherweight
2021-07	#12	Featherweight
2021-08	#12	Featherweight
2021-09	#12	Featherweight
2021-10	#11	Featherweight