1) Football, 12:30 p.m. ET, Fox. The college football season, an American tradition, is starting in Dublin, Ireland. That’s where Nebraska(shown here) and Northwestern – each back from a 1-8 Big Ten season – collide. There’s also a game on Fox Sports 1 (Connecticut/Utah State, 4 p.m. ET) and four on the CBS Sports Network – Austin Peay/Western Kentucky (noon) … Idaho State/Nevada-Las Vegas (3:30 p.m.) … Charlotte/Florida Atlantic (7) … Vanderbilt/Hawaii (10:30).
2) “48 Hours,” 9 and 10 p.m., CBS. Here are reruns of two stories that show long-ago crimes being re-probed with DNA technology. In the first, four girls (ages 13 to 17) were killed at closing time at a yogurt shop in Austin Texas in 1991. In the second, an 11-year-old girl was killed in Newport Beach, Cal., in 1973; in 2019, a DNA study produced a suspect who died prior to the trial.
3) “The 100,000 Pyramid,” 10 p.m., ABC. We know Ken Jennings is a fact whiz, but how does he do in this game, pitted against Ross Matthew? We’ll see in this rerun; the other half-hour has RuPaul and Carson Kressley. That follows “America’s Funniest Home Videos” reruns, at 8 and 9.
4) “Hobbit” films, 5:10 (2012) and 8 p.m. (2013), HBO, followed by “House of the Dragon” at 10:45. The super-prequel season gets serious. HBO reruns the opener of “Dragon” (its “Game of Thrones” prequel), on the eve of its second episode. It also has two-thirds of the “Hobbit” trilogy, which leads into the epic “Lord of the Rings.” That comes five days before Amazon Prime opens its massive “Lord” prequel, “The Rings of Power.”
5) And more. At 8 p.m., BBC America concludes its “Africa’s Wild Year” documentary and CBS reruns an “FBI: International,” with the team trying to protect the attorney general during her trip to Hungary. Freeform has a terrific animation marathon, from “Sleeping Beauty” (1959) at 7 a.m. to “Frozen” (2013) and “Moana” (2016) at 5:50 and 8:20 p.m. And the Paramount Network has the immensely entertaining “Knives Out” (2019) at 9.