Both top-rated “NBC Nightly News” and ABC’s second-place “World News” showed ratings gains last week, reports The New York Times.

Diane Sawyer’s first non-holiday week as the “World News” anchor drew 9.4 million viewers, the program’s highest average in nearly two years. The network said the ratings have gone up each week since Sawyer took over Dec. 21.

NBC, however, retained the top slot, with 10.7 million viewers on average, the newscast’s highest weekly average in four years.

–Elizabeth Jensen