By James Hibberd
March 26, 2012 at 04:31 PM EDT

ABC’s Once Upon a Time and Desperate Housewives were Sunday night’s top-rated series, though CBS won the evening thanks to some NCAA basketball over-running into primetime.

Once Upon a Time (8.7 million, 2.8) slipped a bit to a series low in the ratings, followed by a steady Desperate Housewives (8.7 million, 2.6). At 10 p.m., quasi-controversial newcomer GCB (6.5 million, 2.2) rose 10 percent this week. 

It’s numbers a bit out of whack thanks to that sports overrun, CBS had Amazing Race (9.3 million, 2.3) and then The Good Wife (9.5 million, 1.8) with guest star Matthew Perry, and finally CSI: Miami (8.9 million, 2.0)

NBC’s Harry’s Law (8 million, 0.8) fell 20 percent to an all-time low, then the Peacock had Celebrity Apprentice (6 million, 1.8).

Fox aired repeats peppered with originals of second-string animated comedies Bob’s Burgers (4.0 million, 2.0) and American Dad (4.3 million, 2.0).

UPDATE: Meanwhile on cable, the numbers for Mad Men are in…