UPDATED WITH FINALS: NBC has dominated its rivals in key demos for a third straight Monday to start the television season, with “The Voice” winning its two-hour block and “The Blindspot” continuing to look good despite a dip last night. On the other end of the new-show spectrum, Fox’s “Minority Report” dropped again and has to be in jeopardy of losing its valuable post-“Gotham” timeslot.

According to national estimates from Nielsen, “The Voice” was the broadcast leader from 8 to 10 p.m. with a 3.3 rating/10 share in adults 18-49 and 12.15 million viewers overall, down a tick from last week in the demo. It was followed by week three of “Blindspot” (2.4/8 in 18-49, 9.06 million viewers overall), which was down 0.2 but drew about as many young adults as the two veteran dramas in its timeslot (“Castle” and “NCIS: Los Angeles”) combined.

“Blindspot” has proven to be a huge gainer in delayed viewing, seeing a bigger lift in its second week to bring in L+3 rating to within 7% of its premiere.

Elsewhere, Fox’s “Gotham” (1.5/5 in 18-49, 4.33 million viewers overall) was down a tick from the 1.6 it did its first two weeks of the season. But “Minority Report” followed with its lowest scores in three airings (0.7/2 in 18-49, 2.07 million viewers overall), down 0.2 week to week. Its 1.1 rating in 18-49 and 3.1 million total viewers were the lowest averages for any of the fall’s Big Four premieres to date, and it has only gone downhill from there.

CBS again claimed the night’s No. 1 entertainment series in 18-49 with “The Big Bang Theory” (3.9/13 in 18-49, 15.40 million viewers overall), which was up a tenth from last week and easily beat “The Voice” head-to-head (3.8 to 2.8 from 8 to 8:30). “Life in Pieces” stabilized in its third week (1.9/6 in 18-49, 8.91 million viewers overall), though its retention was again around just 50%. “Scorpion” (1.8/5 in 18-49, 9.95 million viewers overall) was up a tenth and may be benefiting from Fox’s weak numbers in the 9 p.m. hour, and “NCIS: Los Angeles” (1.2/4 in 18-49, 7.99 million viewers overall) held at the same rating dor a third straight week.

ABC’s “Dancing With the Stars” (1.7/5 in 18-49, 11.82 million viewers overall) was up a tenth from last week, and “Castle” (1.2/4 in 18-49, 6.76 million viewers overall) was flat.

ESPN’s “Monday Night Football” dominated the night overall, with last night’s Detroit-Seattle matchup averaging a 5.2 rating in adults 18-49 and 14.403 million viewers overall — the top demo score for the franchise since Week 1 and the second largest overall audience in its last 16 games (topped only by the 16.03 million for last season’s finale between Denver and Cincinnati). The Seahawks’ 13-10 victory averaged a 24.3 rating in Detroit on ESPN and the local ABC affiliate WXYZ, and a 46.3 combined rating in Seattle on ESPN and independent station KONG.

VH1 was the No. 1 non-sports cable network in 18-49 on Monday with its unscripted trio of “Love and Hip-Hop Hollywood” (1.41 in 18-49, 2.58 million viewers overall), “Black Ink Crew” (1.20 in 18-49, 2.17 million viewers overall) and “She’s Got Game” (0.94 in 18-49, 1.72 million viewers overall).