Ratings: American Idol down 13% from last week, down 40% from last year

Update: The Big Bang Theory adjusted up to 4.4 and American Idol up to 3.9, Person of Interest 3.0

The Big Bang Theory had a 4.2 adult rating and was the #1 show last night. American Idol had a 3.8 adult rating, down 13% from last week (and down 40% from last season’s Top 8 results show).

Idol is usually adjusted up, but a 3.8 is the lowest rating this show has ever had. Idol now has a comparable rating to The X Factor.

The rest of the numbers:

From TVbytheNumbers:

Fox won the night with adults 18-49 (though head-to-head from 8-10p, CBS bested Fox). The Big Bang Theory topped the night with a 4.2 adults 18-49 rating, down half of an adults 18-49 ratings point from last week to season lows, but American Idol was down six tenths to a 3.8 adults 18-49 rating so The Big Bang Theory still easily led.

For the first time, Person Of Interest bested Grey’s Anatomy at 9pm(a 2.9 adults 18-49 rating vs. 2.8 for Grey’s). But both shows were off from their last originals with Person Of Interest down four tenths from last week and Grey’s Anatomy was down two tenths vs. the 3.0 it got in its last original on March 15. It was a season low for Grey’s Anatomy. Rules of Engagement was flat vs. last week (though tied at its season low). The Mentalist was down 11% to a 2.4 adults 18-49 rating tying its series low for a regular telecast.

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