The brother-in-law of Ohio State football coach Urban Meyer has been charged with rape, kidnapping and more ... stemming from a January incident, TMZ Sports has learned.
The suspect is former Chillicothe police officer Brandon Mather -- who is accused of sexually assaulting a woman in the back of a police cruiser while he was off duty.
While two on-duty cops investigated, an intoxicated Mather somehow ended up in a police cruiser with the alleged victim -- where she claims he put his hands down her pants.