Even with “Desperate Housewives” in repeat, ABC scored an easy primetime ratings victory on Sunday, riding strong scores from “Grey’s Anatomy” and “Extreme Makeover: Home Edition.”

According to preliminary nationals from Nielsen, “Grey’s Anatomy” (9.3 rating/23 share in adults 18-49, 21.1 million viewers overall) was easily the night’s highest-rated program and will finish the week as the No. 1 scripted skein in key demos. The Alphabet also won with another two-hour “Extreme Makeover: Home Edition,” with the regular 8 o’clock hour’s score dominating its slot (6.3/16 in 18-49, 16.2 million viewers overall). A repeat of “Desperate Housewives” led at 9 (5.2/12 in 18-49, 13.6 million viewers overall).

Fox ran second in demos at 8 with an original “The Simpsons” (4.4/11 in 18-49, 8.8 million viewers overall) and at 9 with a repeat of “Family Guy” (4.0/9 in 18-49, 7.3 million viewers overall). At 9:30, new comedy “Free Ride” (3.0/7 in 18-49, 5.4 million viewers overall) was up slightly from its week-earlier preem.

Numbers for CBS are murky due to a roughly 30-minute NCAA men’s college basketball tourney overrun. “Cold Case” is expected to come in with roughly a 3.9/10 in 18-49 and 15.4 million viewers overall, while the original movie “Time Bomb” failed to ignite viewers’ interest (roughly 2.2/5 in 18-49, 8 million viewers overall).

NBC saw “Dateline” hit a 14-month high at 7 (2.5/7 in 18-49, 13.5 million viewers overall), followed by the strongest “West Wing” score since November (2.2/5 in 18-49, 8.0 million viewers overall). “Law & Order: Criminal Intent” (3.3/7 in 18-49, 11.3 million viewers overall) was about average, and “Crossing Jordan” was on the low side (2.8/7 in 18-49, 10.1 million viewers overall).

Preliminary 18-49 averages for the night: ABC, 6.0/15; CBS, 3.3/8; Fox, 3.3/8; NBC, 2.7/7; WB, 0.8/2.

In total viewers: ABC, 15.1 million; CBS, 12.3 million; NBC, 10.0 million; Fox, 6.4 million; WB, 1.9 million.