Utah Jazz center Jeff Withey says he NEVER got physical with his Playboy Playmate ex-fiancee, Kennedy Summers ... claiming she made the whole thing up to damage his reputation.
As we previously reported, Summers -- the 2014 Playmate of the Year -- filed a police report earlier this week accusing Withey of domestic violence in an alleged 2016 incident.
Now, Withey's attorney Alan Jackson is firing back with a very strong denial.
"These salacious and patently false allegations appear to be nothing more than a vicious and calculated attempt by an angry former girlfriend to damage Mr.