The Spike

A very credible and experienced instructor has moved my son, 15, over to the Spike for his curveball. He picked it up immediately and it looks like a great pitch to develop. He throws it out of the same slot and his fastballs and change-up. He throws it aggressively.

My understanding is this pitch causes less arm stress.

Any insight to the pros and cons is appreciated.

Generally a little tougher to command, but otherwise a totally fine variant of the CB.

The spike is he only CB grip my son has any confidence and command with. He says it allows him to put more pressure on his middle finger and get better rotation.
It’s all the feel of the grip.