ABC’s “How to Get Away With Murder,” which was a big hit in same-night ratings when it bowed last week, has padded its premiere totals with a DVR-playback record 6 million viewers — pushing its three-day total above the 20-million mark.

This is the second straight year that a rookie drama has set the DVR playback mark, according to Nielsen, as NBC’s “The Blacklist” had held the previous record in total-viewer gains, rising 5.6 million with its Jan. 27 episode.

In the originally reported numbers, “How to Get Away With Murder” drew 14.34 million viewers for its Thursday 10 p.m. premiere, and its three-day DVR lift has vaulted it to 20.3 million.

In adults 18-49, “How to Get Away With Murder” spiked a huge 1.9 ratings points to hit a 5.8 rating — the second biggest lift of all series during Premiere Week, behind only CBS’ “The Big Bang Theory” (2.0). Fox’s “Gotham” was also a big gainer in the demo, rising 1.8 ratings points (3.2 to 5.0).

Leading into “Murder” on ABC Thursday, “Scandal” improved in L+3 to a series record 5.3 rating in 18-49 (up from 3.9 in same-night numbers) and 15.6 million viewers overall (up from 12.2 million). “Grey’s Anatomy,” leading off the night, went from a 3.1 to a 4.5 in 18-49 and from 10.1 million to 13.1 million viewers overall.