The medical examiner said the child died of blunt force trauma from the baseball.
The boy was the son of Rabbi Mordechai Dabbah, who heads the Yeshivat Keter Torah in Lakewood.
New Jersey lawmakers in 2006 considered banning metal bats after a 12-year-old in Wayne was hit in the chest by a line drive off an aluminum bat and went into cardiac arrest.
Steven Domalewski was resuscitated, but suffered brain swelling.
The measure cleared an Assembly committee but stalled in the Legislature.
NEW YORK AND TRI-STATE AREA NEWS