30 for 30: Nature Boy (10 p.m., ESPN) – The acclaimed ESPN documentary series “30 for 30” takes on iconic wrestler, Nature Boy Ric Flair, born Richard Morgan Fliehr. Director Rory Karpf examines the man inside and outside the ring, with interviews with Flair’s children, his first wife and retired wrestlers like Hulk Hogan Ricky Steamboat and The Undertaker.
Also on tonight . . .
Finding Your Roots (8 p.m., UNC-TV) – Bryant Gumbel, Tonya Lewis-Lee and Suzanne Malveaux discover an unexpected ancestry which includes slaves, free people of color, Civil War legacies and European origins.
The Long Road Home (9 p.m., National Geographic) – Based on Martha Raddatz’s best-selling book, this new miniseries chronicles the 2004 ambush of the First Cavalry Division from Fort Hood in Sadr City, Baghdad. The drama stars Jason Ritter, Michael Kelly and Kate Bosworth.
Damnation (10 p.m., USA) – In this new series, a farmer’s strike led by a preacher escalates and a man from his past is sent to restore order.
This is Us (9 p.m., NBC) – Jack and Rebecca finalize Randall’s adoption.
Major Crimes (9 p.m., TNT) – While the search for the missing boys continues, the squad faces off against an untrustworthy priest and threats from the FBI.
Kevin Probably Saves the World (10 p.m., ABC) – Kevin tries to help a man find work to support his family.
Teachers (10 p.m., TV Land) – The show returns with new episodes just in time for Ms. Bennigan to be worried that Hot Dad is back together with his ex-wife.