It was the incumbent, NBC's The Voice (2.3 rating in adults 18-49, 11.72 million viewers), that came out victorious, topping ABC's Idol revival (1.8, 8.36 million) by 28% in the demo and nearly 3.4 million viewers.
Sunday's debut of ABC's American Idol may have been subjected to ratings pressure, but the more interesting battle was saved for night two. In addition, "Idol" was down over 20% in both measures compared to its premiere on Sunday. The average viewership for Fox's final season was 9.4 million viewers.
ABC's fortunes improved at 10 p.m, however, with "The Good Doctor" rebounding from last week's series low.
NBC won the night with a 1.9 and 9.4 million viewers.More news: Craig Mack Latest News, Photos, and Videos
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For Fox, "Lucifer" (0.7, 2.9 million) while "The Resident" (0.8, 3.8 million) was down slightly in the demo.
THE CW | Legends (1.29 mil/0.4) added a few viewers while steady in the demo; iZombie (740K/0.2) dropped a few eyeballs while steady in the demo.
Elsewhere, in far less exciting races, CBS put out only new episodes of Man With a Plan (1.0 adults) and Living Biblically (0.7 adults). ABC was second with a 1.8 and 8.8 million. The NBC drama is yet to find the bottom, shedding another 0.2 in the demo and 13% in viewers (but is still above The Brave's season average in the hour, 0.9 in 18-49). That music competition show began its new season last month with an episode viewed by 12.3 million people. Even after losing No. 1 status among TV's reality offerings to The Bachelor and then America's Got Talent in 2017, the show's Monday installment is averaging a 2.6 rating among adults 18-49 for the 2017-18 TV season.