ABC’s new Friday comedies took a hit in their second week, as CBS’ “Undercover Boss” moved ahead of them in the night’s leadoff hour.

One week after starting strong and easily winning their timeslots, ABC’s “Last Man Standing” (1.6 rating/5 share in adults 18-49, 7.3 million viewers overall) settled for second place, down 16% from its preliminary demo score of last week (1.9), and new Reba McEntire series “Malibu Country” (1.6/5 in 18-49, 7.2 million viewers overall) tumbled by 30%.

ABC still won the night among young adults thanks to a winning performance at 9 p.m. by “Shark Tank” (2.1/6 in 18-49, 6.7 million viewers overall), which was narrowly the night’s top draw in 18-49 ahead of CBS’ “Undercover Boss” (2.0/7 in 18-49, 9.0 million viewers overall). “Boss” jumped 33% from its score of last week opposite the ABC comedy premieres.

Also rising week to week in the hour were Fox’s “Kitchen Nightmares” (1.2/4 in 18-49, 3.5 million viewers overall) and CW’s “America’s Next Top Model” (0.6/2 in 18-49, 1.4 million viewers overall). Hitting season highs, “Top Model” earned the net’s best 18-34 score in Friday’s 8 o’clock hour (0.7/3) since May 2011.

NBC may have taken some comedy viewers away from ABC with its special opening-hour repeats of “Go On” (0.6/2 in 18-49, 2.4 million viewers overall) and “Guys With Kids” (0.7/2 in 18-49, 2.2 million viewers overall). And at 9, the net’s “Grimm” (1.7/5 in 18-49, 5.3 million viewers overall) was down slightly week to week but remained Friday’s top scripted series in 18-49.

In the 10 o’clock hour, ABC’s “20/20” (1.6/5 in 18-49, 5.0 million viewers overall) narrowly led in 18-49 over CBS’ “Blue Bloods” (1.5/5 in 18-49, 11.2 million viewers overall), with the latter pulling ahead in 25-54 (2.2/6) and standing as the night’s most-watched program overall.

For the night, ABC won in 18-49 (1.8/6), while CBS ran second and won in 25-54 (2.4/6) and total viewers (9.9 million).