1) Basketball. The second weekend of the college tournament begins, with only one game that fulfills predictions. That’s at 9:45 p.m. ET on CBS, when Gonzaga and UCLA (shown here), seeded No. 2 and 3 in their region; collide; at 7:15 on CBS, that region has Connecticut (No. 4) and Arkansas (No. 8). Elsewhere, TBS has Kansas State (No. 3) and Michigan State (No. 7) at 6:30 and Tennessee (No. 4) and Florida Atlantic (No. 9) at 9.
2) “The Young and the Restless,” 12:30 p.m., CBS (check local listings). Last Thursday, basketball replaced everything, from soaps to “Sheldon.” Now the primetime shows are gone again, but the soaps return … and celebrate. “Y&R” will turn 50 on Sunday; it starts a multi-day event now, with a costume ball that links the entire cast – hosted by Victor and Nikki, played by Eric Braden, 81, and Melody Thomas Scott, 66, who have been there for 40-plus years.
3) “Grey’s Anatomy,” 9 p.m., ABC. Addison (Kate Walsh) hasn’t been on the show in almost five months, but she arrives today to welcome some trainees. Also, ABC says, Maggie’s lung transplant is derailed and there’s a shocking turn. That follows “Station 19” (Tomas’ barber shop catches fire) and precedes “Alaska Daily” (new career temptations for Eileen and Rox).
4) “Law & Order” and “Law & Order: Organized Crime,” 8 and 10 p.m., NBC. It’s a tough night for politicians. First, one of them is the focus of a not-yet-published report — whose writer has been killed; then one has a fundraiser, when there’s an assassination attempt. In between, “Law & Order: Special Victims Unit” has a dating website bring terror for a young widow.
5) “Good Trouble,” 10 p.m., Freeform. Last week’s season-opener ended dramatically: Callie returned to support Mariana (her foster sister), who’s suddenly running a tech company with Ethan in intensive care. Also, Gael searches for Isabella, who has disappeared with their baby.