Thursday wasn’t a good night for recently introduced series on the Big Four networks, with reality shows “Strong” on NBC and “American Grit” on Fox opening softly while NBC drama “Game of Silence” looked weak out of the gate opposite CBS’ only slightly higher-rated newbie “Rush Hour.” ABC’s “The Catch” fared the best among the rookies, but it had the strongest lead-in of the night courtesy of a two-hour episode of “Grey’s Anatomy.”

ABC won the night in key demos behind “Grey’s Anatomy” (2.2/8 in 18-49, 8.0 million viewers overall), which matched its top score since Feb. 11 and was Thursday’s No. 1 program in 18-49, 25-54 (2.6/8) and 18-34 (1.8/8) as well as key female demos.

At 10 p.m., “The Catch” (1.0/4 in 18-49, 4.8 million viewers overall) was down a tick from last week but on par with its second episode two weeks ago. It won its hour but that wasn’t really saying much given that both CBS with “Rush Hour” (0.9/3 in 18-49, 4.3 million viewers overall) and NBC with “Game of Silence” (0.8/3 in 18-49, 4.0 million viewers overall) posted fractional demo ratings. “Rush Hour” was steady week to week, while the timeslot debut of “Game of Silence” was a couple of ticks lower than the Thursday-at-10 average of “Shades of Blue” earlier this year.

Elsewhere, CBS opened with a repeat of “The Big Bang Theory” (1.5/6 in 18-49, 8.5 million viewers overall) and followed that up with identical demo ratings for original episodes of “The Odd Couple” (1.5/6 in 18-49, 7.2 million viewers overall), “Mom” (1.5/5 in 18-49, 7.5 million viewers overall) and “2 Broke Girls” (1.5/5 in 18-49, 6.3 million viewers overall).

NBC was led by “The Blacklist” at 9 p.m. (1.3/5 in 18-49, 6.6 million viewers overall), which was up a tick from last week opposite the “American Idol” finale despite being surrounded by a pair of low-rated newcomers. “Strong,” which had a special post-“The Voice” preview episode on Wednesday, opened on Thursday with a 0.8/3 in 18-49 and 4.4 million viewers overall.

Fox’s spring premiere of “Bones” (0.9/4 in 18-49, 4.4 million viewers overall) matched the show’s low-water mark from the fall. It was followed by the debut of “American Grit” (0.8/3 in 18-49, 2.4 million viewers overall), which was low-rated but did retain most of its demo lead-in and was steady from its first half-hour to its second.

At CW, “DC’s Legends of Tomorrow” (0.7/3 in 18-49, 2.0 million viewers overall) and “The 100” (0.4/1 in 18-49, 1.1 million viewers overall) held steady week to week.