Evan Daniels has released Version 2.0 for the 2018 NBA Draft Big Board, and there's a change at the top. Arizona’s DeAndre Ayton has jumped Duke's Marvin Bagley for the No. 1 spot. Why? Let's break it down. A dominant freshman season at Arizona has helped Ayton prove himself as arguably the top talent in the 2018 draft. There were some concerns about Ayton entering the season – from motor to competitiveness, though he was the No. 4 player in the 247Sports Composite – and he’s answered almost all questions. Ayton is a physical freak at 7-feet with a plus-six wingspan. He’s a big time athlete with an ideal frame with very wide shoulders. Ayton is a dominant offensive talent with terrific hands and feet to go with elite upside on defense. He is not only a ridiculous player now but still has a significant upside.