This might be the end of Stevenson's reign, I've got Joe by KO in this one. Adonis has become extremely lackadaisical and incredibly easy to hit in his old age.
I watched the last fight with Thomas Williams Jr., a guy I couldn't believe was supposed to be at the world level. The guy was super awkward and not in a good way - messy footwork and body positioning, very slow on the attack and inacurate from anything but close in - but at certain times he was hitting Adonis at will. Stevenson is wide open for any punch at any time. Joe Smith has more than enough offensive firepower to get the job done.
The only x factor is Joe's defense. From what ive seen it's definitely less than stellar. Not a lot of head movement and shelling up into a high guard quite a lot.