Four episodes into the season, the revamped Two and a Half Men still largely held its impressive audience Monday night, while Hawaii 5-0 and The Sing-Off posted significant losses versus last week, according to preliminary numbers.

Men, on CBS at 9 p.m., decreased 6 percent from last week but still posted the night's top ratings, with a 5.8/13 in the adults 18-49 demographic and 15 million total viewers. The network started the night with How I Met Your Mother at 8, which was off 13 percent compared to last week, hitting a season low with a still-strong 3.9/11 in the demo and 8.9 million total viewers.

2 Broke Girls at 8:30 grabbed the night's second-highest ratings with a 4.2/10 in the demo and 10.5 million total viewers. Mike & Molly at 9:30 was the third-best rated show of the night, taking a 4.0/9 in the demo, and 11.7 million total viewers. The night closed on a down note for the network, with Hawaii 5-0 plunging 19 percent to a season low with a 2.6/6 in the demo and 9.7 million total viewers.

With Monday's three top-rated shows, CBS grabbed an overall win for the night, scoring an average 3.9/9 in the demo and 15 million total viewers.

At ABC, Dancing With the Stars from 8 to 10 held steady with last Monday's showing, posting a 3.1/8 in the demo and grabbing 16.9 million total viewers. Castle finished the night for the network, performing on par with last week with a 2.4/6 in the demo and 11.1 million total viewers.

NBC received some dispiriting news in Monday night's numbers, with The Sing-Off from 8 to 10 posting a 22 percent decline versus last week. It had a 1.4/4 in the demo and 4.2 million total viewers. A Prime Suspect repeat closed the night.

Fox's numbers for Monday night are currently inconclusive due to overrun from game two of the American League Championship Series, which pushed Terra Nova to 8:52 p.m. and House to 9:52. From 9 to 10, the combined Terra Nova and House posted a 2.6/6, and House took a 2.3/6 in the demos, but those numbers will most likely be revised.