Re: Concerns for Cueto
He was getting a little "velocity drunk" late lat season (as he has tended to do throughout his career, but hs improved on a lot in the last 2 years) and was throwing his sinker (2-seamer) a little too hard. Throw it too hard and it sinks less and is easier to hit. Pretty simple stuff really.
Still don't know where you get your "breaking too early" observation from.
PS great data Doug, I'm going to bookmark that website.