Oklahoma City Thunder player Terrance Ferguson is being sued by woman who claims Terrance and his brother sexually assaulted her in Sept. 2018 ... and she claims Ferguson shot video of the incident.
According to the lawsuit, filed in Oklahoma County District Court, the accuser claims she had been in a consensual sexual relationship with the NBA player ... but things soured when he tried to get her to participate in a threesome with his brother Brandon Willis.
In her suit, obtained by TMZ Sports, the woman claims she repeatedly turned down the request for the threesome .