The Vampire Diaries Ratings

Scoreboard	CBS	ABC	FOX	NBC	UNI	CW
Adults 18-49: rating/Share	2.5/8	2.2/7	1.7/5	1.2/4	1.0/3	0.7/2
Adults 18-34: Rating/Share	2.0/7	1.7/6	1.3/5	0.8/3	0.9/3	0.6/2
Total Viewers (million)	7.791	6.757	5.887	4.252	2.613	1.608

CBS was number one with adults 18-49 and with total viewers.
Note:  CBS aired live coverage of the NCAA Tournament. Due to the nature of live sports programming, the ratings are likely to be adjusted in the finals. 
On CBS, coverage of the NCAA Tournament earned a preliminary 2.5 adults 18-49 rating, up two tenths from last year's coverage (both preliminary and final). Expect adjustments to this number in the finals. 
On ABC, Once Upon A Time In Wonderland earned a 0.9 up from last week's series low 0.8 adults 18-49 rating. Grey's Anatomy scored a 2.5, up a tenth from last week's 2.4 adults 18-49 rating. Scandal garnered a 3.1, up two tenths from last week's  2.9 adults 18-49 rating.
On FOX, Hell's Kitchen matched last week's 1.8 adults 18-49 rating. In its new half-hour format, American Idol scored a x1.9, down a tenth from last week's series low 2.0 adults 18-49 rating. The premiere of Surviving Jack earned a 1.3 adults 18-49 rating. Your predictions were too optimistic!
On NBC,  Parenthood earned a 1.4, up a tenth from last week's 1.3 adults 18-49 rating.
On The CW, The Vampire Diaries earned a series low 0.7, down four tenths from last week's 1.1 adults 18-49 rating. Reign notched a 0.6, down a tenth from last week's 0.7 adults 18-49 rating.
Overnight ratings for Thursday, March 27, 2014:

Time	Net	Show	18-49 Rating	18-49 Share	Viewers Live+SD (million)
8:00PM	CBS	2014 NCAA Basketball Tournament (8-11PM)	2.5	8	7.79
	FOX	Hell's Kitchen	1.8	6	5.25
	NBC	Hollywood Game Night -R	1.2	4	4.64
	ABC	Once Upon A Time in Wonderland	0.9	3	3.30
	CW	The Vampire Diaries	0.7	2	1.71
			tvbythenumbers.com
9:00PM	ABC	Grey's Anatomy	2.5	7	8.13
	FOX	American Idol	1.9	6	7.94
	NBC	Hollywood Game Night  -R	1.1	3	3.73
	CW	Reign	0.6	2	1.51
9:30PM	FOX	Surviving Jack -P	1.3	4	5.12
			tvbythenumbers.com
10:00 PM	ABC	Scandal	3.1	9	8.84
	NBC	Parenthood	1.4	4	4.39