Boone, who was one of the best defensive catchers in the 1970s and '80s, is an assistant general manager for the club. Boone was drafted by the Phillies in the sixth round of the 1969 First-Year Player Draft.
Corrales, who has spent the past 50 years as a Major League catcher, manager and coach, is an advisor to the Nationals.
Commissioner Bud Selig will announce all of the first-round picks, and for teams with compensation-round picks, the club rep(s) will announce those.
The annual First-Year Player Draft takes place this year from June 4-6, beginning with the first round and Comp Round A on Monday, June 4, at 7 p.m. ET. The first night of the event will be broadcast live on MLB Network and streamed live on MLB.com. Rounds 2-40 will also be streamed live on MLB.com on June 5-6.
MLB.com's coverage, sponsored by CenturyLink, will include Draft Central, the Top 100 Draft Prospects list, Draft Tracker, a live interactive application that includes a searchable database of every Draft-eligible player, and Draft Caster. You can also keep up to date by following @MLBDraft on Twitter. And get into the Draft conversation by tagging your tweets with #mlbdraft.
Bill Ladson is a reporter for MLB.com and writes an MLBlog, All Nats All the time. He also could be found on Twitter @WashingNats. This story was not subject to the approval of Major League Baseball or its clubs.