Well, if his team wasn't very good last year, I'm not surprised he didn't get noticed too much. But apparently the people around his league noticed him, he was second team all league in 2006 and first team last year.
He also gets a mention on Max Emfinger's "asset" rating system. If you haven't seen this before, Max tries to rate kids based on their measurables. And Zach is on the list:
Emfinger's Asset list