I'm not underestimating Thurman, but it seems he'll be having a hard time winning this one however you look at the match. With his significant height and reach advantage, even Fundora's jabs alone are probably enough to outpoint Thurman and defeat him via UD.

And given Thurman's age and probably ring rust, which definitely affects his reflex and agility, it's certainly a big challenge for him to be able to get inside and hurt Fundora from within.