Fox’s American Idol returned Wednesday night to its lowest-rated and least-watched regular-season premiere telecast ever (the first season aired during the summer and generally isn’t counted). Idol delivered 17.9 million viewers and a 6.0 adults 18-49 demo rating. That’s down 19 percent from last year’s opener, which was the previous lowest-ever record-holder.

The numbers also mean last night’s Idol premiere will not be the most-watched entertainment show this week — Tuesday’s NCIS had 22.9 million viewers. This is the first time another series was seen by more viewers than Idol during its regular season premiere week.

Fox was braced for worse. Last year Idol was down an unprecedented 24 percent after the network launched The X Factor in the fall. This fall had both X Factor and NBC’s powerful The Voice, so competition show burnout by the time Idol opened seemed likely. Idol still managed to rank as the top-rated singing show premiere this season. Read more