Summer Olympics (NBC, other channels) – The games continue with women's pole vault, women's 4x100m relay and men's platform diving. Also, in the last race of his Olympic career, Usain Bolt anchors Jamaica against Justin Gatlin and the U.S. in the men's 4x100m relay final. Check out the full TV and live-stream schedule at nbcolympics.com.
My Last Days (9 p.m., CW) – In the final installment of this special docuseries, a 35-year-old with brain cancer relies on her love for her husband and dedication to finding a treatment.
Ancient Aliens (9 p.m., History) – The U.S. military denies that the 1947 Roswell crash involved anything other than a weather balloon.
Dark Matter (10 p.m., Syfy) – A Blink drive test goes awry, propelling the Raza to a parallel reality.
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