APEX: Social Facilitation.
Olympic competitors are called Olympiads.
challenger
descrimination
The Pharcyde ''running''
You can, but you will probably get a penalty called against you.
field
a luger?
competitors
Canidate -US Gov NovaNet
used ruthless buiness tactics against their competitors
Sumo.
A group of competitors is often referred to as a "field" or "contingent." In sports, they may be called "athletes" or "participants," while in business, they are commonly known as "rivals" or "competitors." The specific term can vary depending on the context and the nature of the competition.