TV HIGHLIGHTS

MacGyver, 8 PM on Ch. 7 and Ch. 12: Expect relationship dynamics on this show to do some shifting in the aftermath of former series regular George Eads’ Season 3 departure, partly because of new series regular Henry Ian Cusick (“Lost”). As Season 4 opens, his character, Oxford-educated Russ Taylor, upsets the Phoenix Foundation apple cart by challenging how Mac (Lucas Till) and his team are used to doing things. Levy Tran, who joined the cast last when Eads left, gets bumped to series regular as her character, Desi Nguyen, takes on more responsibility.

NBA Basketball, 8 PM on ESPN; 2 AM on ESPN2:

In their second meeting this week, T.J. Warren and the Indiana Pacers host Pascal Siakam and the Toronto Raptors. Despite being several games back in their division, the Pacers are right in the mix in the Eastern Conference standings. Siakam, meanwhile, has missed some time and was not on the court when Indiana outlasted the Raptors in a 120-115 over-time win back in December. Warren put up 24 points in that one.

High Maintenance, 11 PM on HBO; 12:30 AM on HBO: The Guy (Ben Sinclair) continues to find his life intersecting with those of his New York pot clients as this quirky sitcom returns for Season 4. In the premiere, “Cycles,” The Guy finds a lost pooch, and a reporter who has pitched a story to her editor about her parents’ marriage inadvertently strains her own relationship when her out-of-town boyfriend visits for their anniversary weekend. Elsewhere, a singing telegram performer in a bad mood looks for some relief. Natalie Woolams-Torres, Marcus Pérez and Larry Owens guest star.