Tonigh at 10PM the series finale of Private Practice airs head to head with the season finale of Parenthood. I'ts a safe bet that Parenthood will beat Private Practice, which has struggled all season. The question is whether the Grey's Anatomy spin-off will see a ratings bump for its final episode. Both shows should benefit from CBS airing a rerun of timeslot competitor Vegas tonight. Last week, Parenthood earned a 1.9 adults 18-49 rating while Private Practice garnered a 1.2. How do you think each show will fare tonight? Make your predictions below.