ABC’s controversial new reality show ”The Glass House” continued to struggle in its second outing, failing to make the list among Monday’s top 10 programs in the key 18-49 demo. Reality shows ruled elsewhere, though, as NBC won two of the night’s hours with ”America’s Got Talent” and ”American Ninja Warrior” and Fox the other with ”Hell’s Kitchen.”

According to preliminary national estimates from Nielsen, ”Glass House” averaged a 1.2 rating/3 share in adults 18-49 and 3.3 million viewers overall in the 10 o’clock hour , down from last week’s modest premiere score (1.5/4 in the demo and 4 million viewers overall). ABC fared better earlier in the evening with its two-hour ”The Bachelorette” (2.2/7 in 18-49, 7.0 million viewers overall), which was at the same level as last week and was the night’s No. 1 program in key female demos.

NBC did OK leading off the night with U.S. Olympic Swimming Trials (1.9/6 in 18-49, 6.9 million viewers overall) and then surged to the lead with ”America’s Got Talent” (3.0/8 in 18-49, 10.4 million viewers overall), which was the night’s No. 1 program in most categories. The net then fell off from there, but stayed on top among the broadcasters at 10 p.m. with ”American Ninja Warrior” (2.0/5 in 18-49, 6.1 million viewers overall).

Fox matched NBC for the 18-49 lead on the night thanks to solid performances from ”Hell’s Kitchen” (2.3/7 in 18-49, 5.5 million viewers overall) and ”Masterchef” (2.2/6 in 18-49, 5.4 million viewers overall), both down a bit week to week. ”Kitchen” won the 8 o’clock hour in most demos.

CBS did OK in 25-54 and total viewers but was not all that competitive in 18-49 with its repeats of Monday regulars ”How I Met Your Mother” (1.1/4 in 18-49, 4.2 million viewers overall), ”2 Broke Girls” (1.3/4 in 18-49, 4.7 million viewers overall), ”Two and a Half Men” (1.3/4 in 18-49, 5.2 million viewers overall), ”Mike and Molly” (1.2/3 in 18-49, 4.8 million viewers overall) and ”Hawaii Five-0” (1.2/3 in 18-49, 6.0 million viewers overall). ”Hawaii” tied ABC’s ”Glass House” in 18-49 while pulling ahead in both 25-54 and total viewers.

CW averaged a mere 0.1 rating/0 share on the night with encores of reality show ”Breaking Pointe” (0.2/1 in 18-49, 0.6 million viewers overall) and drama ”90210” (0.1/0 in 18-49, 0.2 million viewers overall).

Preliminary 18-49 averages for the night: NBC and Fox, 2.3/7; ABC, 1.9/6; Univision, 1.4/4; CBS, 1.2/4; CW, 0.1/0.

In total viewers: NBC, 7.8 million; ABC, 5.8 million; Fox, 5.4 million; CBS, 5.2 million; Univision, 3.6 million; CW, 0.1/0.