Could be a "plow scar", you said you found it in a wash in a field in Ohio..... not uncommon for points to have been hit by a plow in the past. Less likely is that it suffered natural damage from being "washed' down the wash during a flood event and struck by another rock. And lastly, it could have been manufactured by a "not-so-skilled" knapper or someone just learning. It still looks like a perfectly functional point to me..... it could penetrate and draw blood and that's what you hope for when hunting with primitive weapons.
HTH,
Rick