Baseball America has ranked the Pittsburgh Pirates’ farm system as the best in the game. That is all the way up from No. 16 last year. The Pirates have four players ranked among the publication’s top 100 prospects – shortstop Konnor Griffin (No. 1), right-hander Bubba Chandler (No. 15), outfielder Edward Florentino (No. 28) and righty Seth Hernandez (No. 38).