Floyd Mayweather Jr. was in a fit of jealousy over a basketball player when he allegedly attacked his baby mama, Josie Harris on Thursday ... this according to the police report obtained by TMZ.
According to the report, Mayweather read text messages on Josie's phone ... which included messages from C.J. Watson, who plays for the Chicago Bulls. According to the report, Mayweather screamed, "Are you having sex with CJ? Harris replied, 'Yes, that is who I'm seeing now.'"
According to the report, the 10-year old son of Mayweather and Harris told cops he "saw his dad was on his mother and was hitting and kicking her."
The police report says Harris was taken to Southern Hills Hospital and treated for "minor facial injuries and a sore left arm." Pictures of the injuries were taken.
As we first reported, Josie Harris called the police at around 5 AM Thursday from her home in Vegas -- and when cops arrived she told them the professional boxer had attacked her and threatened to kill her.