Good Info.
One thing I noticed though about velos is it seems like a lot of the softer throwing guys dont get hit as hard lately. maybe its just my imagination I dont know if anyone else is noticing it but I would think it would be harder to get a higher exit velocity off the ball from a guy throw 85 mph than a guy throwin 95 mph. sure its easier to make contact but making hard contact is something else. just my 2 cents. anyone have any data to support/refute this?
In my experience soft tossers tend to have better secondary stuff and prefer to pitch backwards in counts (pitching off their offspeed stuff instead of off their fb... in other words, flashing that fb as a 'show me' pitch rather than trying to work ahead with it). Some guys are just simply blessed with that natural armside run on their two-seamer, which can be based on a variety of different factors such as arm slot, arm action, size of hands/grip, pressure on the seams etc. If a soft tosser is showing a decline in fb velocity, then it's going to be more difficult to sneak that fastball by as a 'show me' pitch in certain counts. You just have to familiarize yourself with how they like to pitch, pitch strengths (values), spin rate, 2/4 seam fastballs, LD contact, swing & miss rate, groundball/flyball %s etc when incorporating velocity decline.
Personally, I believe there's a hard hit correlation between pitchers who throw a high percentage of 4-seam fastballs and are showing a decline in velocity (this is because a lot of high % 4-seam guys work that pitch up in the zone to induce flyballs outs. A good example is Mike Fiers, who was a teammate of mine in college -- those extra tics of velocity mean the world to him:
http://disciplesofuecker.com/2015-outlook-fastballer-mike-fiers/22041
Fiers induces flyball outs working 89-90 with that str8 over-the-top deceptive delivery, but when he starts dipping to 86-87, those flyballs will turn into home runs very quickly. Keep in mind, Fiers also likes to work in a cutter.
With that in mind, Mat Latos, imo, will be a good fade next time out. He throws a heavy 4-seam fastball about 60% of the time, and has been showing a consistent decline in velocity resulting in a lot of hard hit contact lately.
There are going to be a lot of different ways to skin this thing; I've been simply using the doc as just another capping tool for myself when it comes to analyzing pitchers.
Hope that helps a little bit.