Tenn. Code Ann. § 39-17-502: Gambling - Defenses

(a) A person commits an offense who knowingly engages in gambling.

(b) It is an affirmative defense to prosecution under this section, which must be proven by a preponderance of the evidence, that a person reasonably and in good faith relied upon the representations of a gambling promoter that a gambling activity was lawful because it was an authorized annual event pursuant to title 3, chapter 17. It is not an affirmative defense to prosecution under this section that a person engaged in a gambling activity that was not an authorized type of lottery game pursuant to title 3, chapter 17.

(c) The offense of gambling is a Class C misdemeanor.