There were several freshmen that got a chance to start on Varsity at some of the developing programs last year. And there are probably lots of talented sophs that will get a chance to start on Varsity this year at some of the bigger programs.
There is a list of kids that were recognized as all conference last year (it is on maxpreps) and it includes ten freshmen that made at least HM on this list. They are Logan Gilbert (St. Georges), Brock Nowell (Conrad), Christian Diamanty (Wilm Christian), Brett Nowell (Conrad), Chris Kramedas (Conrad), Tyler Collins (Lake Forest), Ryan Engh (Indian River), Drew Kobasa (Tatnall), Brett Anderson (Tower Hill), and Donovan Simpson (St. Andrews). These are a few names at least. I'm sure there are very many more talented freshmen and sophomores than just on this list, including the kids already listed under this topic.