1) “Saturday Night Live” season-finale, 11:29 p.m., NBC. For a time, “Avengers: Endgame” seemed to be the only movie in existence. In its first weekend, its U.S. box office was eight times as big as EVERY other movie – all 111 of them – combined. After the third weekend, it had totaled $734 million in the U.S. and $2.5 billion worldwide. Wisely, “SNL” has an “Endgame” star (Paul Rudd, shown here, who plays Ant-Man) host; he’s done it three previous times. DJ Khaled is the music guest.
2) “American Idol,” 8-10 p.m., ABC. On Sunday, “Idol” will stuff its finale with big-deal performers, including Carrie Underwood, Adam Lambert, Katy Perry and Luke Bryan. First, here’s a rerun of last week’s episode; the final five each perform three songs … then three of them advance.
3) Baseball, 7 p.m., Fox. Football and basketball dominate the broadcast networks, but now the “national pastime” gets its primetime moment. On Saturdays, Fox will have three games, varying by region. It starts with Astros at Red Sox, Cubs at Nationals and Brewers at Braves.
4) “Ransom,” 9 p.m., CBS. A week before the season-finale, the team faces a unique problem: A woman survived an explosion, but has no memory of what happened.
5) “Psycho Granny” (2019) and “Killer Grandma” (2019), 8 and 10:03 p.m., Lifetime, repeating at 12:01 and 2:04 a.m. Wait a second … aren’t grandmothers supposed to be a good thing?