Sinker spin


#1

im very confused

how is a sinker supposed to spin?

please helppppp


#2

Sinkers are a variation of the fastball


#3

yeah, i know

but like… a 4SFB has all 4 seams rotating through the air backwards where-as the 2 SFB has the horseshoes on either side of the ball spinning backwards

the seams that travel through the air during a sinker are at a different angle than those of the other FBs

so which seams travel through the air, what angle, etc?


#4

a sinker spins with backspin slightly slower than a fastball, that, and the slight drop in velocity give it its sink.


#5

I wouldnt say slower velocity, because theres some guys in the MLB that throw one at 95mph. I would say less back spin giving it less air friction holding it up. Which would give it a dropping action


#6

I would say that it has spin similar to a 2-seamer, but with less backspin


#7

The lower velocity is not the cause of the sinker, it is the effect. There are a few guys in MLB who throw low 90’s sinkers, some even mid 90’s. The velocity and movement is caused by the spin axis, not less spin.


#8

so when your holding it like a 2 seam FB

when its spinning is the upside-down horseshoe that is facing your palm spinning slightly to the left, right…?