Rikers Island fight. Pretty big coincidence
It's hard to believe that out of all the thousands of inmates at Rikers in 1990, both Korey and Matias (who don't know each other) wind up alone together in a room and get into a fist fight over what to watch on TV.
The previous year, Korey went to Central Park with thirty other kids and the group assaulted a bunch of people, at least 4 of whom were joggers. Not far from where they were doing this, and at around the same time, Matias was attacking and raping a jogger.