Tavern Brawler damage rerolls feature and interactions
I'm gearing up to play an unarmed Battle Master Fighter. I'm taking the Unarmed Fighting Style and also want to take the Tavern Brawler origin feat (primarily for the improvised weapons proficiency because it sounds extremely fun).
I have, however, been stuck on reading and re-reading the "Damage Rerolls" part of Tavern Brawler.
>Damage Rerolls. Whenever you roll a damage die for your Unarmed Strike, you can reroll the die if it rolls a 1, and you must use the new roll.
I can't understand whether that would include additional damage riders like Divine Smite, Berserker Barbarian's Frenzy or Battle Master Maneuvers.
I asked my GM and he thinks that it should work the same way that Great Weapon Fighting does, and that has been confirmed by Sage Advice to only work on "weapon attacks", but he isn't entirely sure himself, so I want to make doubly sure.
Does anyone have a good RAW source to get an answer? Or may tell me what I'm missing?
I'm starting to think that if it DID work the way I'm thinking, I'd have seen a couple of Tavern Brawling Paladins rerolling their 1s from Smites or something like that, so I'm leaning towards "no".