Wednesday was not a great night for season finales of broadcast competition series. NBC’s “America’s Got Talent,” which was the top show in primetime, sunk 29% in ratings vs. last summer’s finale. Fox’s “MasterChef” dropped 27% among adults 18-49.

Neither of those were actually the largest decline of the evening, however. CBS’ “Big Brother” — not the season’s finale — fell 33% from the same night last year.

NBC was first in ratings with a 1.1 rating/6 share in the advertiser-coveted 18-49 demographic and in total viewers with an average of 7.6 million, according to preliminary numbers. The two-hour “AGT” season finale from 8-10 p.m. posted a 1.5 /8 and 10.1 million viewers. A primetime special promoting Lilly Singh’s new (very) late-night talk show at 10 received a 0.5/3 and 2.5 million viewers.

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Fox was second in ratings with a 0.8/4 and third in viewers with 3.1 million. Summer 2019’s penultimate “MasterChef” episode at 8 had a 0.7/4 and 3 million viewers. The actual finale at 9 got a 0.8/4 and 3.2 million viewers.

CBS was third in ratings with a 0.6/3 and second in viewers with 3.2 million. “Big Brother” at 8 received a 1.0/6 and 4.3 million viewers. Reruns followed.

Univision was fourth in ratings with a 0.5/2 and fifth in viewers with 1.3 million.

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ABC and Telemundo tied for fifth in ratings, both with a 0.4/2. ABC was fourth in total viewers with 2.1 million, Telemundo was sixth with 1.2 million.

ABC aired all repeats last night.

The CW was seventh in ratings with a 0.1/1 and in viewers with 538,000. Following a rerun, “Hypnotize Me” at 9 had a 0.1/1 and 434,000 viewers.