The Red Sox are watching their farm system tick upward, a trend they’ve been seeing for a few years now and have accelerated since Chaim Bloom took over. They have a big chance to add top-end talent to their organization on Sunday, picking fourth overall in the draft. It’s not often the Red Sox are afforded the chance to select this high — and considering what you have to do to get there, the hope is it’s a while before it happens again — so it’s worth looking at just what kind of talent is available at this spot.