American Ninja Warrior” Season 8 got off to a strong start on Wednesday night, launching with its most-watched premiere yet in total viewers (6.3 million). The series dipped a tenth to a 1.7 in the adults 18-49 demographic versus last season’s premiere, but still stood as the top show of the night in all key measures, helping NBC win the night for the second day in a row.

The return of “The Night Shift” was down from its two previous premieres, notching a 1.1 in the demo (versus last year’s 1.5, which benefited from having “The Voice” as a lead-in during February sweeps) and 4.9 million viewers at 10 p.m.

Fox’s “Masterchef” premiere also returned fairly steady, earning a 1.1 in the demo and 3.8 million viewers, followed by “Wayward Pines” with a 0.9 in adults 18-49 and 2.7 million viewers.

ABC’s “500 Questions” closed its run with a 0.8 demo rating, equal to its Tuesday night airing, and rose 18% in total viewers (4.5 million vs. Tuesday’s 3.8 million). That was followed by repeats of “Modern Family” (0.8 in the demo, 3 million viewers) and “The Goldbergs” (0.6, 2.2 million). CBS aired a night of repeats with “Undercover Boss” (0.9 in adults 18-49, 4.5 million viewers), “Criminal Minds” (0.9, 4.8 million viewers) and “Criminal Minds: Beyond Borders” (0.8 demo, 4.1 million viewers). The CW drew a 0.2 in the demo and just over 750,000 viewers for its “iHeartRadio Summer Pool Party” and a repeat of “Supernatural.”