ABC’s “Nightline” continues to find success in the A25-54 and A18-49 demos, drawing the most viewers in late-night in those categories for the fourth week thanks, in part, to the NBA Finals.

NBC’s “Tonight” show was able to maintain its top spot as the most watched show in the time slot. “Nightline” has drawn more viewers than David Letterman for 10 weeks now, the first time that’s happened since 2003.

NBC and ABC saw ratings increase from the week prior in both total viewers and the demos, while CBS’ “Late Show” was down in all three categories.

Note: ABC ratings are based on 30-minute broadcast, while CBS and NBC are based on one hour. CBS’ ratings for the week exclude Tuesday.