As recent as 2019, the Houston Astros had a very good minor league system. Kyle Tucker and Yordan Alvarez have since graduated. Seth Beer, Corbin Martin, and J.B. Bukauskas were traded for Zack Greinke. Along with the Astros losing their first and second-round picks in 2020 and 2021, they have a lot of work to do to rebuild the prospect pool. That doesn’t mean the system is totally bereft of talent. There are plenty of question marks, so let’s take a look at who Houston has in the pipeline. Make sure to check out all of our other Top Prospect Articles. 1. Korey Lee, CatcherHit: 45Power: 55Run:…