BattleBots 32 teams advance, and football star Vernon Davis serves as a guest judge, as the robot-fighting competition continues. 8 p.m. ABC
Beauty and the Beast Cat and Vincent (Kristin Kreuk, Jay Ryan) find themselves at odds after a new threat to Vincent emerges on a new episode of the fantasy drama. 9 p.m. KTLA
Greatest Hits The Backstreet Boys, Hanson, Meghan Trainor, Coolio, CeeLo Green, Jewel, Tori Kelly, LL Cool J, Wiz Khalifa and John Legend perform on a new installment of the musical flashback series hosted by Arsenio Hall and Kelsea Ballerini. 9 p.m. ABC
Million Dollar Listing...