UPDATED: With the Bruce Jenner interview, "20/20" scored its biggest ratings in 15 years, ABC said.
The two-hour interview averaged 17.1 million viewers Friday, the second night of the May ratings period. In the chat with Diane Sawyer, Jenner announced that he had wrestled with gender identity for decades and considered himself a woman.
The talk had been conducted in February but held till the ratings period, a strategy that paid off handsomely for the Disney-owned network.
ABC easily won the night in total viewers and was the victor in the 18-to-49 age group by a wide margin. ABC had its most-watched Friday since January 2003.
ABC started the night...