Fox’s "American Idol" took a ratings hit Wednesday night by going up against NBC’s Olympics coverage, based on Nielsen overnights for the key 18-49 demo. TVbytheNumbers.com reports that the two-hour singing competition was down a half-point in the demo from a week ago, sinking to a 3.4 average.

NBC’s prime-time coverage of the Sochi Winter Games, meanwhile, delivered a 5.6 average in viewers 18-49 as the Peacock Network rolled to another big win for the night.

ABC put up just one fresh program in prime time, "Super Fun Night," which fell two-tenths from last week in the 18-49 demo to a 1.3 average, equaling its series low.

CBS settled for repeat programming, including a re-airing of "The Beatles: The Night That Changed America — A Grammy Salute," which managed only a 0.9 average in 18-49.

When the dust settled, NBC had a 5.6 for prime time overall in the 18-49 demo, topping Fox (3.4 average), ABC (1.2), Univision (1.1) and CBS (0.9). NBC’s advantage in total viewers was even more impressive, with an average of 20.8 million to lead Fox (11.4 million), CBS (5.0 million), ABC (3.6 million) and Univision (2.9 million).