Addison Barrett scored a team-best 14 points while Mia Semioli had 13 and Allen Riley and freshman Ella Kreuzer scored 12 apiece for the Cougars.
Chatham (12-8) will square off versus top-seeded Morris Catholic (17-1) in the MCT semifinals on Friday at 6:30 p.m.
Chatham girls' basketball improves to 5-2 in win at home on Saturday night,
Lady Cougars open season with OT win behind 18 points from Riley Allen.
Christina Liggio, Ella Inacio, Carlie Lapinski, and Addison Barrett are among girl hoop players who have earn watchful eyes.