3 nets each take piece of ratings pie Mon.


NEW YORK -- "Heroes" continued to prevail in a three-way race at 9 p.m. while "CSI: Miami" had its highest ratings of the season and the new "Rules of Engagement" built upon "Two and a Half Men" in its second week.

A two-hour "24" won the night for Fox and gave the network the win in the demo at 8 p.m., although stiff competition an hour later gave both viewership and the demo to NBC and its runaway hit "Heroes," according to preliminary data released Tuesday by Nielsen Media Research.

NBC's "Deal or No Deal" (16.1 million, 4.6 rating/12 share in adults 18-49) got the night started with a win in viewership although it bowed to the first hour of "24" in the demo by three-tenths of a ratings point. Meanwhile, CBS got good news with "How I Met Your Mother" (9.8 million, 3.6/10) and "The Class" (9 million, 3.3/8) that were both ahead of their season averages for original episodes. ABC's "Wife Swap" (8.3 million, 3.7/9) was also at its highest demo mark of the season.

Things got busier at 9 p.m., with three networks -- CBS, NBC and Fox -- all drawing over 13 million viewers. "Heroes" (14.7 million, 6.3/14) was the unquestioned winner in the demo and squeaked out a win over the full hour in viewers against CBS that had "Two and a Half Men" (15.6 million, 4.9/11) and "Rules of Engagement" (13.5 million, 5.0/11). ABC's "Supernanny" (9.7 million, 4.1/9) was well behind in both measures but it was still its highest ratings of the season too.

Fox's "24" (13.4 million, 5.0/12) is up 1% in viewers compared to a year ago.

The pendulum swung back big time to CBS at 10 p.m., with "CSI: Miami" (19.8 million, 6.4/16) winning the hour and the night in both viewership and the adults 18-49 demographic. ABC's "What About Brian" (5.5 million, 2.7/7) was about average while NBC's "Studio 60 on the Sunset Strip" (6.5 million, 2.8/7) was at its lowest rating for an original episode so far this season.

Nightly averages: ABC (7.9 million, 3.5/9); CBS (14.6 million, 4.9/12); NBC (12.4 million, 4.6/11); Fox (13.4 million, 5.0/12); and The CW (2.6 million, 1.2/3).