This Tuesday, as American Idol averaged 28.2 million total viewers (a season low for the night)....

8 pm/ET
Trailing Idol and an NCIS repeat (10.6 million), Biggest Loser weighed in with 8.7 mil across its two-hour run, a 600 thou drop.

9 pm
Fox's New Amsterdam premiered to 13.7 mil, or 44 percent of Idol's audience. (Compare that to the 46 percent retention The Wedding Bells saw a year ago, or the 12.3 mil Back to You reaped last week.) Big Brother placed third with 6.7 mil. One Tree Hill dipped 200K, to three mil.

10 pm
Behind an SVU rerun, ABC's Primetime: What Would You Do? (6.4 mil) dropped a quarter of its premiere audience. Jericho dropped 14 percent, slipping to 5.9 mil.

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