Update: Despite slipping to a 2.9 adults 18-49 rating with 9.13 million viewers, Thursday’s “Scandal” still dominated its 10PM timeslot.

It ranked second, behind only “The Big Bang Theory,” for the evening as a whole.

Prior to “Scandal,” ABC offered the series finale of “Once Upon a Time in Wonderland” (0.9, 3.38 million) and “Grey’s Anatomy” (2.7, 8.28 million).

Facing CBS’ “Elementary” for the first time since the NCAA Basketball tournament began, ABC’s “Scandal” endured a slight blow in the overnight ratings.

Thursday’s episode, the third-to-last of the third season, posted a 6.4 overnight household number. Down from last week’s 6.7, it was nonetheless dramatically ahead of the 5.2 delivered by “Elementary” and the 2.5 garnered by NBC’s 10PM offering “Parenthood.”

It is unclear if and how the 4% decline in the overnights will extend to the show’s adults 18-49 performance, but it is unequivocally clear that “Scandal” will be the timeslot’s dominant victor in that category.

Earlier in the night, ABC offered the final episode of “Once Upon a Time in Wonderland” (2.3) and “Grey’s Anatomy” (6.0). Both endured slight declines from last week’s performances.