With the minor league season just completing the first weekend of play, it’s a good time to look at the minor league systems in the game. Who is good, who is not? The first grouping in rankings really is the bottom 4, which includes three teams who have seen a lot of success in the 2010s, along with one that has worked into recent competitiveness: 30. Boston Red Sox Top prospect: #119 Michael Chavis, 3B Prospect to watch in 2019: Antoni Flores, SS The Red Sox saw Dave Dombrowski do what he’s known for doing – build a winner at the major league level at the expense of the farm…