Mark Von Holden/Invision/AP
In this Sept. 11, 2013 file photo, former Olympic athlete Bruce Jenner arrives at the Annual Charity Day hosted by Cantor Fitzgerald and BGC Partners, in New York. A

NEW YORK — Bruce Jenner's much-awaited interview on "20/20" lifted the ABC newsmagazine to the top spot last week.

The broadcast, hosted by Diane Sawyer, centered on Jenner's acknowledgment that he's transitioning into a woman. It was seen by 17.1 million viewers, according to the Nielsen company.

Overall in prime time, CBS was the champ for the ninth consecutive week, averaging 8.4 million viewers. ABC, NBC and Fox followed.

TNT was the week's most popular cable network, averaging 2.8 million viewers in prime time.

NBC's "Nightly News" lost to ABC for the fourth straight week. ABC's "World News Tonight" averaged 8.2 million viewers to 8.1 million for "Nightly News" as that newscast, with Lester Holt filling in, continued to suffer from anchor limbo in the wake of Brian Williams' continuing suspension.