Tuesday may belong to NBC, but ABC's Uncle Buck earned the distinction of premiering as summer's first formidable summer launch.

The sitcom opened to a very decent 1.5 rating among adults 18-49 at 9 p.m., holding that number in its second episode as well. Uncle Buck also held among total viewers, averaging 5.2 million in both half-hours.

The score is especially strong considering how it stood out between premiere hourlong telecasts of To Tell the Truth. The game show averaged a 1.0 rating among adults 18-49 at 8 p.m., rising to a 1.2 rating in the key demo after Uncle Buck. All in all, a mixed night for ABC — though it does now have the distinction of one of the best summer comedy launches in years.

America's Got Talent and Maya & Marty both rose on NBC, the latter nearly matching its premiere score from two weeks ago. Talent led all originals for the night, rising two-tenths of a point to a 2.5 rating in the key demo. Maya & Marty, up by the same measure, took a 1.4 rating with adults 18-49.

The rest of the broadcast networks did not offer as much in the way of originals. Person of Interest, CBS' lone effort, averaged a 1.0 rating among adults 18-49. On Fox, Hotel Hell (0.9 adults) was improved before a steady Coupled (0.5 adults). The burnoff of Containment continued on The CW, fetching a 0.3 rating in the key demo.