HBO comedy series “Rooster” concludes its first season as the network’s most-watched comedy debut in more than 15 years, according to Warner Bros. Discovery, cited by both outlets. Variety reports the debut season averages 6.5 million viewers, making it HBO’s biggest comedy launch since “Hung” (2009) and “Sex and the City” (1998), the only HBO comedy first seasons to outperform it in the first season metric referenced. Deadline adds detail on U.S. performance, saying Warner Bros. Discovery reports the season finale drew 2.2 million U.S. viewers over the first three days, compared with 2.4 million for the premiere during its initial measured period. Both sources frame the figures as part of the company’s published viewership results and describe the series as Steve Carell-led. Deadline notes the finale airs as the season wraps on Sunday night. Variety states the first season concludes on May 10. Together, the reporting indicates strong initial audience numbers for the freshman run and continued viewership into the finale.