Fox wins rating race, but drama tops 10 p.m. slot

Show Network Rating (18-49) Share Viewers (millions)
1. American Idol FOX 7.1 19 20.4
2. Lost ABC 3.8 10 9.5
3. NCIS CBS 3.4 10 16.0
4. The Biggest Loser NBC 3.0 8 7.6
5. NCIS: Los Angeles CBS 2.9 8 13.7
6. Parenthood NBC 2.6 7 6.3
7. Dancing With the Stars ABC 2.4 7 12.3
8. The Good Wife CBS 2.4 7 12.0
9. V ABC 2.5 7 6.0
10. 90210 CW 0.8 2 1.5

“American Idol” won Tuesday primetime for Fox and ABC’s “Lost” was the evening’s most-watched scripted show in the 18-49 demo, but the top story of the night might be the 18-49 victory by NBC’s “Parenthood” at 10 p.m. over firstrun episodes of CBS’ “The Good Wife” and ABC’s “V.”

According to preliminary nationals from Nielsen, “Parenthood” (2.6 rating, 7 share in 18-49, 6.3 million viewers overall) edged “Good Wife” (2.4/7, 12.0 million) in the demo, albeit with barely half as many overall viewers as the CBS drama.

In the second episode since ending its hiatus, “V” came in at 2.5/7, 6.0 million, dropping from last week’s 2.8/8, 7.2 million.

“American Idol” (7.1/19, 20.4 million) dominated Tuesday on a Beatles- themed night, despite slipping from the previous week. Its other two- hour competition, NBC’s “The Biggest Loser” (3.0/8, 7.6 million), had gains of more than 5%.

“Dancing With the Stars” (2.4/7, 12.3 million) shed viewers from the previous week, while an episode of “Lost” considered by many the critical highlight of the season to date was seen by the series’

smallest aud ever (3.8/10, 9.5 million), even as it topped Tuesday’s

18-49 scripted offerings.

CBS’ tag-team of “NCIS” (3.4/10, 16.0 million) and “NCIS: Los Angeles (2.9/8, 13.7 million) finished second to “Idol” in overall viewers; in 18-49, the 9 p.m. “NCIS: Los Angeles” came in fourth place with a series low.

New episodes of the CW’s “90210” (0.8/2, 1.5 million) and “Melrose Place” (0.5/1, 1.1 million) struggled against the competing networks’

firstrun competition.

Preliminary 18-49 averages: Fox 7.1/19, CBS 2.9/8, ABC 2.9/8, NBC 2.8/8, Univision 1.3/3, CW 0.6/2.

In total viewers: Fox 20.4 million, CBS 13.9 million, ABC 9.3 million, NBC 7.2 million, Univision 3.2 million, CW 1.3 million.

Follow @Variety on Twitter for breaking news, reviews and more