A good breaking ball can leave even the best of hitters looking silly, and be one of the key pitches that help pitchers rack up the strikeouts.
The Pittsburgh Pirates have plenty of prospects that can really spin a good breaking ball, striking out their fair share of batters in the process.
Below is a look at the best breaking pitches in the Pirates system. If you missed it yesterday, I looked at the best fastballs in the system.
Po-Yu Chen Curveball
Speaking of spinning a breaking ball, there are few in the system who posted the spin rate that Chen did last year with his curve.