He however has the right of appeal and until the process is followed, the sentence can not take effect.
A statement posted on his official Instagram account also says: "'We would like to clarify that he has already defended himself against the accusations, affirming that he did not participate in the episode", said a statement posted on Robinho's Instagram feed.
BC-SOC-Brazil-Robinho Sentenced, 2nd Ld-Writethru, 229 Robinho denies sexual assault after 9-year jail sentenceAP Photo LON178Eds: Adds photo link.
The 2014 statement also made reference to the earlier claim and suggested it was being used "in an opportunistic manner" with regard to the alleged incident in Milan.
"Every legal measure is being taken about this first ruling". After a brief stay at Chinese team, Guangzhou Evergrande, he joined Atletico Mineiro a year ago.
According to local legislation no Brazilian citizen can be extradited to another country under request to face criminal charges, although that will not apply should he leave his home nation and is detained elsewhere.
A lack of discipline, however, began to dog Robinho, and he was soon returning to Santos before a spell in Italy where the assault took place.
He has been capped 100 times by Brazil, scoring 28 goals.
He then joined Manchester City in the English Premier League and moved to AC Milan in 2010, spending five years under contract with the Serie A club.