For a week, Fallon retakes the lead from Colbert

Jimmy Fallon has topped Stephen Colbert in late-night ratings for the first time since Donald Trump has been president. But the NBC comic might want to keep the champagne on ice.

The Nielsen company said that Fallon's "Tonight" show averaged 2.66 million viewers last week, a whisker above the 2.62 million achieved by Colbert's "Late Show." CBS' Colbert, with his sharp anti-Trump humor, eclipsed long-time leader Fallon the week after Trump's January inauguration and hasn't looked back.

NBC's comparatively strong prime-time schedule in the summer may have helped; CBS has been airing mostly reruns lately in prime time. CBS also aired Colbert reruns on...