• (noun): Combatant who tries to throw opponent to the ground.
    Synonyms: grappler, matman

Some articles on wrestler, wrestlers:

... In general, the first sumo wrestler to touch any body part outside the ring, or have any part of his body other than the soles of his feet touch the ground loses ... body,' the term is used to describe a wrestler who was not first to fall or touch outside the ring, but who had no chance of winning owing to the superior technique ... Whilst a relatively rare event, it is most often seen after close bouts in which one wrestler clearly had the advantage towards the end ...
Referee (professional Wrestling) - Distractions and Bumps
... Sometimes during matches, referees will be knocked down by wrestlers ... This is usually to allow for a wrestler to use a foreign object or perform an illegal move, or for another wrestler to run in and be able to get away with it ... To emphasize the power and fortitude of the wrestlers, referees are frequently "knocked unconscious" for periods of time by moves that are not considered ...