When you see an organization that takes a nosedive, as the Giants did in 2017, it's often instructive to go back and look at their top prospects from two or three years prior.
For the Giants, this tells you just about all you need to know.
As the core got older in the latter part of the decade and production started to dip, the Giants didn't have any help coming from the minor league system. Earlier, we looked at their 2011 and 2013 prospect classes. Today, it's the 2015 MLB Pipeline Top 30, a group that sent 19 players to the big leagues, but didn't fill many of the gaps that soon started to open up on the big league roster.