Farewell, Speed channel — as of Saturday morning, Fox Sports 1 launches in its place, focusing on college sports, NASCAR and UFC.

Also, goodbye to “Do No Harm” (NBC at 10 p.m.), the Jekyll-and-Hyde medical series that was pulled off the weekday prime-time schedule almost immediately. In the series finale, Jason panics when his alter ego, Ian, unexpectedly starts taking over his body during his day job.

The Washington Nationals face off against the Atlanta Braves (MASN on WUSA 9 at 7:10), followed by 48 Hours, airing at 10.

Sunday talk shows: “Platts Energy Week” (WUSA at 7:30 a.m.) interviews Woodrow Wilson International Center For Scholars’ Duncan Wood and ClearView Energy Partners’ Christine Tezak; “This Week in Defense News” (WUSA at 8) has Deloitte’s retired Gen. Charles Wald, FedBid’s retired Col. Steve Green and the Atlantic Council Cyber Statecraft Initiative’s Jason Healey; “BioCentury This Week” (WUSA at 8:30) features National Human Genome Research Institute’s Eric Green; “Fox News Sunday” (Fox at 9) interviews Sens. Rand Paul (R-Ky.) and Richard Blumenthal (D-Conn.) and Rep. Peter T. King (R-N.Y.).

“White House Chronicle” (WETA at 9) has the U.S. Energy Association’s Barry Worthington, SmartPower’s Brian Keane and the University of Southern California’s Adam Clayton Powell III; “State of the Union” (CNN at 9) features Sen. John McCain (R-Ariz.), CNN’s Donna Brazile, Americans for Tax Reform’s Grover Norquist and Democratic National Committee Communications Director Mo Elleithee; “This Week” (ABC at 10) features Sen. Bob Corker (R-Tenn.), Rep. Eliot L. Engel (D-N.Y.) and Republican National Committee Chairman Reince Priebus; “Meet the Press” (NBC at 10:30) has Sen. Jack Reed (D-R.I.), NAACP President Benjamin Jealous and Sybrina Fulton, mother of Trayvon Martin; “Face the Nation” (CBS at 10:30) talks to Sen. Lindsey O. Graham (R-S.C.), New York City Police Commissioner Raymond W. Kelly and Rep. Bob Goodlatte (R-Va.); “Bloomberg Government’s Capitol Gains” (WUSA at 11:30) has the National Transportation Safety Board’s Deborah Hersman, Massachusetts Institute of Technology economics professor Jonathan Gruber and Bloomberg Government analyst Evan Croen.

Oprah airs her much-anticipated Lindsay Lohan interview on “Oprah’s Next Chapter” (OWN at 9 p.m.), and if that’s not enough LiLo for you, Oprah’s network has also commissioned a reality show about her life.

On Season 4 of competition series “The Great Food Truck Race” (Food Network at 9), the eight teams compete to win not only a food truck but $50,000 to start the business. In the opener, everyone begins in Beverly Hills and must create a delicious $20 dish.

“Dexter” (Showtime at 9) tries to help his ex, Hannah, flee the country and multi-tasks by also trying to figure out if his protege is able to follow his code of serial killing.

Marisol doggedly continues to try to get her son out of jail by living a secret life on “Devious Maids” (Lifetime at 10), as she discovers information about Flora that could help the case.

— Emily Yahr