Leading up to when the first pick by the Arizona Diamondbacks is announced by Commissioner Rob Manfred shortly after 7 p.m. ET on Monday, Jim Callis and Jonathan Mayo will be working the phones, texting and emailing decision-makers in the scouting industry, as they try to line up their final mock Drafts. Along the way, they hear a lot of rumors, buzz, talk of guys with helium and guys sliding. They will bring that information to everyone here in MLBPipeline.com’s Draft Buzz