A sinker


#1

do you grip the ball like a 4-seam fastball? and pronate-late while really snapping your fingers down?
what are some of the key things that i should be doing to throw a good sinker?
and…why does a sinker sink? to be honest…i really only understand why a slider and curve ball break the way they do…


#2

The other name for a sinker is a 2-seam fastball. The only difference between a 2-seam fastball and a 4-seam fastball is how the ball is gripped. A 2-seam fastball is gripped with the seams while a 4-seam fastball is gripped across the seams.

Otherwise, a 2-seamer is thrown exactly the same as a 4-seamer.

When thrown, a 2-seamer will fall more quickly than will a 4-seam fastball due to the fact that (paradoxically) only 2 seams are interacting with the airstream rather than 4 seams.


#3

Chris. A 2 seam fastball can be thrown with or across the seams. It’s 2 vs. 4.


#4

I know. I’m just trying to simplify things.


#5

Just to add a bit, a sinker is often found do to a guys natural armslot and release point. For me I get more horizontal movement than sink, but I know other guys that get tons of sink, but could never bring the ball back on the plate.


#6

another thing to get more down movement is to turn the ball over.


#7

i see…thanks
but what about the different kind of movements on the 2-seam fastballs?
why do some pitch cuts across and some sinks down? how are they thrown differently?


#8

im not to familiar with 2 seamers but im guessing it would be from the different arm slots and angles that people throw at that make it move differently.


#9

I think a lot of the break on a 2 seamer comes naturally…My son is 11 and a lefty. His 2-seam breaks in on a righty. It starts out looking like it will be on the outer half of the plate and then ends up going over the inside of the plate to a righty. It appears to break a good 12" - 18" horizontally when I am catching it in warm ups. It is strictly a natural break he has. His 4 seamer and change up go fairly straight. Needless to say he throws a lot of 2 seamers during his innings on the mound as most batters are right handed…lol.