Judge Mathis has Jemele Hill's back in a big way -- and says if she tried to sue ESPN over her 2-week suspension, "I think she'd win."
"I support her 100% in everything she has done to express her 1st amendment rights," Mathis told us ... "and if it violates policy of ESPN then perhaps ESPN has a policy that's unconstitutional."
Mathis says he has no doubt Hill would be victorious in court -- but a nasty drawn-out legal battle could cost Jemele her career ... and she needs to decide if the juice is worth the squeeze.