Former L.A. Lakers player Samaki Walker is adamant he did NOT attack his girlfriend in a motel parking lot last week ... though his accuser says Walker was violent and is lying through his teeth.
Here's what we know ... both Walker and his accuser Unique Allen (who gave us permission to use her name) had an altercation at a motel in Encino, CA early Thursday morning.
Allen tells TMZ Sports ... the argument (which started in their room) moved to the parking lot -- but when the two got inside Samaki's Range Rover, he struck her several times in the jaw and arm.