Primetime Ratings: CBS Runs Through Tuesday Competition

NBC's ‘The Sing-Off' grows in second installment, ‘Gordon Ramsay Cookalong' flops

CBS retained its Tuesday night primetime dominance with
another sound victory Dec. 15.  The
network won every time slot thanks to powerhouses NCIS, NCIS: Los Angeles,
and The Good Wife.  Elsewhere in primetime, NBC finished second
thanks to improving marks for the second installment of The Sing-Off.

NCIS averaged a
4.3/13 and 20.6 million viewers in the opening hour.  ABC, NBC and Fox ran to a three-way tie at
2.3/7.  ABC aired A Charlie Brown Christmas; NBC countered with The Sing-Off; Fox ran So You
Think You Can Dance
.  The CW's Vampire Diaries rerun drew a 0.6/2.

CBS stayed in front at 9 with NCIS: Los Angeles spinning a 3.6/10 and 17.4 million viewers.  NBC's second hour of Sing-Off tallied a 2.8/8. 
Fox's Gordon Ramsay: Cookalong averaged
a 1.7/5.  ABC's Scrubs pulled a 1.5/4. 
Another Vampire Diaries rerun
on the CW charted a 0.6/2.

The Good Wife remained
in first at 10 with a 2.8/8 and 14.1 million viewers.  NBC's The
Jay Leno Show
was second with a 1.8/5. 
ABC's rerun of The Forgotten averaged
a 1.0/3.

CBS dominated the night with a 3.6/10 and 17.3 million
viewers overall.  NBC was next at 2.3/7
and 6.4 million viewers, nearly three times less than CBS' tally.  Fox was third at 2.0/6.  ABC finished at 1.6/5.  The CW averaged a 0.6/2.