The Smartest Team Sunday at 3 p.m., Channel 2
On Sunday at 4, PBS is re-airing the controversial episode of “Frontline” about concussions and football, called “League of Denial: The NFL’s Concussion Crisis.” Beforehand, at 3, you can see another documentary about the concussion issue called “The Smartest Team.” It includes the work of youth sports expert and author Brooke de Lench (who lives in Concord) as she tries to reduce the concussion rate in a football program at an Oklahoma high school.
Saturday Night Live Saturday at 11:30 p.m., NBC
How’s the show doing with all of its new cast members? This season will be an interesting experiment, to see which if any of them will break through. I’m still loving Kate McKinnon (above, with Seth Meyers); she has that thing that Kristen Wiig has, where even her straight face makes me smile. And returnees Cecily Strong and Nasim Pedrad are special, too. Bruce Willis hosts this episode, with musical guest Katy Perry.
Masters of Sex Sunday at 10 p.m., Showtime
You that hide behind walls, you that hide behind desks.
The Good Wife Sunday at 9 p.m., CBS
Should she stay or should she go?
The Walking Dead Sunday at 9 p.m., AMC
J’aurais toujours faim de toi.Matthew Gilbert can be reached at email@example.com. Follow him on Twitter @MatthewGilbert.