Passage: Gutierrez made his debut in Mexico on April 30, 1989, when he was 14 years old. He was trained by his uncle Rey Misterio Sr. and wrestled early on in Mexico where he learned the Lucha Libre high flying style that has been his trademark. He had ring names such as "La Lagartija Verde (The Green Lizard)" and "Colibrí (Humming bird)" before his uncle gave him the name of Rey Misterio Jr. In 1991, Mysterio was awarded "Most Improved Wrestler" in Mexico while wrestling as Colibrí.

Question: How old was Rey Misterio Jr. when he made his Lucha Libre wrestling debut?
he was 14 years old