This is the best Mariners blog I've seen on the web. Keep doing what you're doing.
Got to the CPX today and ... whaaaaa? I didn't put the movement chart in last night? What a feeb... here y'go amig-O's:
Brooks called that blue pitch a FOUR-seam fastball - on what basis, I don't know. 4-seamers are fast; 2-seamers sail kinda like wiffleballs, more slowly and with more break.
These pitches averaged 93.2 MPH for Erasmo last night, so presumably the pitches were getting classed as 4-seamers because they were all within 1-2 MPH of his very maximum speed on the night.
His velocity is the most consistent I have seen; he threw 29 of 30 fastballs within a tiny 2.2 MPH band of the chart. That's a good thing as far as his physical attributes, but can be a bad thing as far as pitcher timing.
I'd be very interested to know: how much does Colorado affect the run on a fastball? Maybe Erasmo will get a Sal Maglie effect. The Barber said that his career turned around when he learned to snap off a curve at altitude in Mejico...
Tell you something else, though. I was watching the charts, during the game, and in the first two innings, Erasmo's FB and change were swerving 15 inches! armside -- fully the equal of anything Doug Fister ever threw. In the 3rd and 4th, the swerve settled back into normal ranges.
Maybe the finger-snap and RPM are things that Erasmo is just now learning.