Pushing aside a piece of cardboard, the intrepid one-year-old boy had crawled through a gap between an air conditioner and a window frame and out onto the fire escape before stepping down onto the store awning.
Christina was dialing 9-1-1 with one eye on the baby when suddenly, he came tumbling down.
Christina caught him, saving his life.
The unharmed baby and three siblings ages 2, 3 and 5 found in the apartment were all taken by ambulance to Lutheran Medical Center.
The 1-year old is reportedly in stable condition.
The parents, Sam Miller and Tiffany Demetria, asleep in the apartment, were arrested for child endangerment, with the distraught Miller being taken into police custody at the scene.
Council Member Vinnie Gentile, whose office is just a few blocks away, rushed over and commended Christina for her actions, attributing her catch to the Torre genes.
Christina's proud father, tracked down by the Post at Yankee Stadium, said his daughter's heroic feat beat any of his World Series rings.
Although she wasn't that athletic growing up, "she always had good hands", the former catcher remembered.
The story was reported by the Daily News, the Brooklyn Eagle and the New York Post and many others.