Also showing July 11: “Earth’s Natural Wonders,” on KCTS.

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“TKO: Total Knock Out”

Premiere of summer game show hosted by comedy superstar/actor Kevin Hart, with contestants running a goofy obstacle course in competition for a $50,000 prize; in the first episode, a teacher, a behavioral specialist, a nurse, a police officer and a mom/cheerleader compete; 9 p.m. Wednesday on KIRO.

Also on Wednesday

“Earth’s Natural Wonders,” 8 p.m. (KCTS): Season-two premiere; people surviving the world’s most inhospitable places, the high Himalayas, the Canadian Arctic and the blistering Australian outback.

“Big Brother,” 8 p.m. (KIRO): House guests vie for the power of veto; a veto meeting may lead to an eviction nominee being saved.

“America’s Got Talent,” 8 p.m. (KING): The judges revisit some of the best auditions from the 13th season.

“MasterChef,” 8 p.m. (KCPQ): The contestants cook for Season-7 winner Shaun O’Neale’s wedding.

“Kingdoms of the Sky,” 9 p.m. (KCTS): Premiere of three-part series about the animals and people who make their home on the world’s mountain ranges, starting with a look at the Rockies.

“Reverie,” 10 p.m. (KING): When Mara tries to save a young dancer whose recent tragedy has sent her into deep despair, the case leads her to a surprising reunion.

“Code Black,” 10 p.m. (KIRO): Willis continues to tend to Rox’s medical needs; Leanne and Max’s father go searching for Ariel; Noa and Mario realize their career choices will mean ending their relationship.

“Yellowstone,” 10 p.m. (PARAMOUNT): The Duttons deal with a painful family anniversary; Kayce saves a young girl from danger; Jamie and Beth plan their political careers; Rainwater makes an ominous threat to the Dutton legacy.

Madeline McKenzie: mmckenzie@seattletimes.com. Program times may vary depending on your cable provider or service.