MESA, Ariz. — Out of the armies of fresh-faced job-seekers who annually descend upon any gathering of baseball executives, holding prestige-school degrees and seeking to become the next Brian Cashman or Theo Epstein — preferably in a matter of months — came one who was different. This one was smart and eager, like the rest, but also humble and curious and insatiable of mind, perfectly splitting the difference between being knowledgeable and knowing there was everything still to learn.