Round one to ABC

Grey's Anatomy beat CSI in the ratings last night and by a fairly large margin.

Here's the breakdown of the overnights from Zap2It.

"Survivor: Cook Islands" put CBS on top at 8 p.m. with a 9.8/16. A "Grey's Anatomy" clip show on ABC was a strong second at 9.2/15. NBC was third with season premieres of "My Name Is Earl," 5.8/10, and "The Office," 5.7/9 (which actually built on its lead-in a little in total viewers and 18-49). "'Til Death," 3.9/6, and "Happy Hour," 3.0/5, were fourth for FOX. The CW went with a "Smallville" rerun.

At 9 p.m., the "Grey's Anatomy" season premiere, 15.7/23, scored a rather shocking win over CBS' "CSI," 13.5/20, which has dominated the timeslot for several years. "Deal or No Deal" was a distant third for NBC at 6.5/10. "Celebrity Duets" slumped to a 2.4/4 for FOX. A "Supernatural" rerun on The CW trailed.

Another medical drama, NBC's "ER," won the 10 p.m. hour with a 10.0/16. The premiere of "Shark" on CBS averaged 9.8/16. ABC's "Six Degrees" lost a big chunk of its lead-in to finish at 8.6/14.