Devon should quit with the trash talk, Bradley beat his *ss, he got a gift decision against Kotelnyk, got another against Matthysse, should have three loses on his record. Once he fights someone who hits him back, he will go back into his shell, and rely on home town decisions for wins.
It would be a good squab with Khan outboxing Alexander first 4-5 rounds probably on the verge of stopping him. Khan has really ignored those bodyshots if he landed one of those on Devon I'd feel sorry for Devon. But if Khan wants to look flashy and do mostly headhunting he's going to get stunned acouple of times by Alexander who I do think has a puncher's chance. I don't think Alexander is a real threat at 147, but if Khan underestimates him and doesn't bring his A game Alexander can cause an upset. He has good one punch power and if it wasn't for Maidana being as gutsy as he was most fighters would of fallen. But then also Khan is a mobile target he isn't easy for anyone to find unless it's the late rounds.
I would also favor Alexander, when he sits down on his punches as he did with Maidana, he's tough for anyone at 140. The speed is about a wash, I think Alexander is better on the inside, Alexander has a better chin, they both have technical flaws but I think Alexander's are less, and I think Alexander has more power. Khan "could" win, but I think Alexander would win.
At 147 Devon TKOs Khan, those right hands that Peterson landed would be KO shots from the harder punching Devon, not to mention that Khan has no inside game and Devon would destory him because Khan doesn't know how to maintain distance. The only advantage Khan would have would be a reach advantage, but he isn't faster than Devon, more powerful than devon, more skilled than devon, and he doesn't have a chin as good as Devon's. Alexander UD12 or Alexander TKO9