Monday’s ratings results brought good news for each of the Big Four networks, with CBS winning in key demos behind its “Scorpion”-led drama lineup while ABC had the most popular show among young adults with “The Bachelor.” NBC’s “Superstore” continued to look solid in its third outing, up a tick from last week, while Fox had its best Monday of the season with a celebrity-themed “MasterChef” special.

CBS had solid showings across the board with “Supergirl” (1.8/6 in 18-49, 8.8 million viewers overall), “Scorpion” (2.0/6 in 18-49, 11.4 million viewers overall) and “NCIS: Los Angeles” (1.6/5 in 18-49, 10.5 million viewers overall). “Supergirl” was down a tick from two weeks ago but otherwise at its highest level since week two, while “Scorpion” was 0.2 below its Jan. 4 rating (which matched its season high) but was a tenth behind “The Bachelor” as the top show in 18-49 while ruling as the night’s top show outright in adults 25-54 (2.9/7) and total viewers. And “NCIS: Los Angeles” (1.6/5 in 18-49, 10.5 million viewers overall) continued to thrive without drama competition on ABC or CBS, matching its season high and winning the 10 o’clock hour across the board.

For the night, CBS led in 18-49 (1.8/5), 25-54 (2.6/7), all key male demos and total viewers. ABC finished on top in adults 18-34 (1.6/6) and all key female demos.

At ABC, “The Bachelor” (2.1/6 in 18-49, 7.5 million viewers overall) was up a tenth from last week (and likely two tenths in the finals) and won its 8-10 p.m. time period in 18-49, 18-34, teens 12-17 and all female demos. Last week’s second episode of the season ended up down just a smidge in Live+3 averages in both adults 18-49 (2.6 vs. 2.7) and total viewers (8.34 million vs. 8.70 million), picking up more in delayed viewing numbers on a night when it faced the highly rated college football championship game on ESPN. Capping the night for ABC was post-show “Bachelor Live” (0.9/3 in 18-49, 4.0 million viewers overall).

NBC has to be pleased with the performance of “Superstore” (1.6/5 in 18-49, 5.6 million viewers overall), which was up a tenth from last week and within 0.2 of its Jan. 4 premiere; it also finished within 0.2 of competing “Supergirl” in its timeslot. Last week’s episode had a good showing in Nielsen’s “live plus-3” results, too, as it finished within 7% of the previous week’s series premiere in both 18-49 rating (1.91 vs. 2.06) and total viewers (6.28 million vs. 6.76 million).

“Telenovela” (1.1/3 in 18-49, 3.8 million viewers overall) was also up a tenth from last week but continues to lose a sizable chunk of its “Superstore” lead-in; in “live plus-3,” last week’s episode (1.21 in 18-49) was down 18% from the show’s week-earlier premiere (1.48) after having fallen off by 25% in same-day numbers (0.98 vs. 1.30). From 9 to 11 p.m., “The Biggest Loser” (1.0/3 in 18-49, 3.4 million viewers overall) was down a tenth from last week and 0.2 below its Jan. 4 premiere.

Fox, which is back with regular scheduling next week with its reboot of “The X-Files” and the premiere of “Lucifer,” kept the lights on nicely with “MasterChef Celebrity Showdown” (1.5/4 in 18-49, 4.1 million viewers overall). The 1.5 was up 25% (0.3) from the Jan. 4 two-hour special “Superhuman” (1.2) and edges out the premiere combo of “Gotham” and “Minority Report” in September (1.4 average for the night) as the net’s top-rated Monday of the season.

CW aired the 90-minute special “Just For Laughs Starring Howie Mandel” (0.4/1 in 18-49, 1.5 million viewers overall), which out-rated the network’s average in the fall with its regular dramedies, and a special repeat of “Whose Line Is It Anyway” (0.3/1 in 18-49, 1.4 million viewers overall). “Crazy Ex-Girlfriend” and “Jane the Virgin” return next week.