What is the protection for the male genitals, worn especially by sportsmen called?

DkRatz72, Exactly. The strap might as well be called a G string.

I Like it when guys strap them on. Helps the package have better curb appeal.

Jock itch

Howzat for an answer

The jock strap is only the outer fabric garmet that holds the "cup" which is the actual protective gear.