Head Tilt and Stepping Out?

I videotaped my son today and his “off” pitches seemed to be due to either a head/trunk tilt or stepping out. My question is- are these both primary faults on their own or due to some other postural issue?

Well if the pitches are “off” and I assume you don’t mean offspeed then it definately is an issue. Most important to all pitchers and the ability to correct other issues is to have repeatable mechanics, if he tucks and it is different from other pitches weather its off or not the mecahnics aren’t being repeated so they need to be the same every time.