Has little or nothing to do with anticipated results. It's not limited to sports or competition. You can choke on an assignment for work, choke in an attempt to seduce a crush of yours. Jordan missing a free throw. You can choke anywhere, anytime.
Choking is when you had control, and failed to execute.

What happens is you are suppose to be focused on what your eyes are viewing. But your weak mind chooses to worry about something negative whether real or not, past or future.

It's bigger than that

The safeguarding of Earth and other worlds from biological cross-contamination (i.e. billionaires with too much time on their hands).

Also known as “planetary protection.” Planetary protection / quarantine “reflects both the unknown nature of the space environment and the desire of the scientific community to preserve the pristine nature of celestial bodies until they can be studied in detail.”

There are two types of interplanetary contamination. Forward contamination is the transfer of viable organisms from Earth to another celestial body. Back contamination is the transfer of extraterrestrial organisms, if such exist, back to the Earth's biosphere.

a pidgin (slang) word commonly used in Hawaii to describe something that there is a lot of.

If you have a lot of something then you have "choke" things.

being up 3-0 in a best of 7 series and still losing. (see Yankees)

n. A small hole in a pipe, bong, or other smoking device with a smoke holding chamber. Located at the end of the chamber farthest from the smoker's mouth. A thumb or finger is placed over the hole during the initial inhalation so that smoke can be sucked into the holding chamber. After the chamber is filled with smoke, the choke is released and the smoke sucked out of the chamber with fresh air rushing in through the carb to displace it.

Alot, numerous.