2 seam fastball variations?

Question

I hear that if you do certain things with a 2 seam fastball grip you can get it to sink and/or have horitzontal movement. What do I have to do to get those different variations on those pitches?

Answer 1

Its all about finger pressure... if you put more pressure on your middle finger, it tends to cut more, if you press with your index, it tails. The harder your fastball, the more it'll move. Also if you put less pressure on both fingers, you throw more of a sinker.