The news was not good for the return of Zoo on CBS.
Zoo Season 3 Episode 1 secured just 3.1 million viewers and a 0.5 rating out of Big Brother, which managed 5.3 million viewers and a 1.6 rating.
That's an embarrassingly low figure for Zoo when you consider the fact that it held less than one-third of the Big Brother demo. For comparison purposes, Zoo Season 2 premiered with 5.1 million viewers and a 0.8 rating.
Over on ABC, Boy Band (2.7 million/0.5 rating) slipped two-tenths, while The Gong Show (3.5 million/0.9 rating) held steady. The return of Battle of the Network (4 million/1.0 rating) stars performed well.
Beat Shazam (3.1 million/0.9 rating) and Love Connection (2.4 million/0.7 rating) lost some ground for Fox with the increased competition.
Hollywood Game Night (3.9 million/0.9 rating) and The Wall (4.7 million/1.0 rating) were both solid, while The Night Shift (4.2 million/0.7 rating) inched up from last week's premiere.
Paul Dailly is a staff writer for TV Fanatic. Follow him on Twitter.