Hypothetical UFC career for 6'6" 255 lb Anthony Joshua: Assume that Joshua has a competent manager that doesn't accept a fight against a wrestler like Cain or Brock Lesnar for his first or second fight. Fight #1: Vs random lower ranked head hunter like Paul Buentello. KOs the shit out of him. Fight #2: Vs Arlovski. Wins by KO. Fight #3: Vs Mark Hunt or Overeem. Wins by KO or decision. Fight #4: Derrick Lewis. Wins by KO. At this point, he's been fighting for 2 years. He's been training his ground game for 2 years. People are calling for a title shot but he takes 1 more fight. Fight #5: Vs Ngannou or JDS. Wins by KO. Fight #6: Vs Stipe. At this point, he's been training his ground game for 2-3 years. He weighs 250-260 lbs and is shredded. Does he have a chance? For all you people saying that boxers can't just jump in and beat top 10 guys.. doesn't that career sound possible to you? The UFC HW ranks are filled with old guys that have glass chins (Arlovski, Overeem) and guys that will just stand and bang (JDS, Hunt, Ngannou). A great boxer with good size (eg Mark Hunt) and/ or athleticism (eg Cro Cop) could jump in right now, win huge fights against those guys, and move up the ranks while he takes favorable matchups and works on his ground game at the same time.