Playbook's Stadium 50 -- Significant moments in North American stadium history

Astrodome
Astrodome, 1973
The scene of tennis' Battle of the Sexes.
For their much-hyped "Battle of the Sexes'' tennis match, Bobby Riggs entered the court riding in a rickshaw pulled by women, while Billie Jean King rode a litter carried by men. This was outrageously over-the-top for the time, though by now it would be low-key even for a closer's entrance.
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High schooler with Down syndrome sinks 3-pointer
Leslie County (Ky.) High School's Ethan Wolfe, who has Down syndrome, checks into the game and knocks down a 3-pointer.
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Hurts surprises family with donation toward a new home
Eagles QB Jalen Hurts surprises a family, whose child is battling cancer, with a $30,000 donation to go toward a new home.
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Ron Rivera rings the bell after final day of cancer treatment
Washington coach Ron Rivera receives an ovation as he walks down the hospital hallway to ring the bell after his final day of cancer treatment.