Fast National ratings for Thursday, Sept. 20, 2007

The premiere of "Survivor: China" led CBS to a big ratings victory Thursday night.

CBS averaged an 8.6 rating/14 share for the night, beating second-place FOX, 5.1/9, by a sizable margin. ABC's 3.4/6 was good for third, edging NBC's 3.2/5. The CW trailed with a 1.2/2.

The adults 18-49 crown also went to CBS, which drew a 3.9 rating in the demographic. FOX took second with a 2.6, followed by NBC at 2.1. ABC averaged 1.6 and The CW 0.8.

The "Survivor: China" premiere delivered an 8.9/15 at 8 p.m. "Are You Smarter Than a Fifth Grader?," 5.0/9, put FOX in second. A "My Name Is Earl" rerun, 3.4/6, was third for NBC, slightly ahead of "Ugly Betty," 3.3/6, on ABC. The CW aired a repeat of Tuesday's "Beauty and the Geek" premiere.

CBS stayed on top at 9 p.m. as a "CSI" rerun scored a 9.1/14. "Don't Forget the Lyrics" kept FOX in second with a 5.1/9. ABC's "Grey's Anatomy" rerun delivered a 3.9/6, while "The Office" held steady for NBC. "Beauty and the Geek" drew a 1.4/2 on The CW.

At 10 p.m., "Without a Trace" finished off CBS' sweep of the night with a 7.7/14. A "Men in Trees" rerun on ABC, 3.1/5, beat out NBC's "ER" repeat, 2.8/5, for second.

Ratings information is taken from fast national data, which includes live and same-day DVR viewing. All numbers are preliminary and subject to change.