competitor (n.)
- adversary
- antagonist
- archer
- athlete
- ballplayer
- baseman
- batter
- battery
- battler
- belligerent
- blade
- bowman
- bravo
- brawler
- bully
- bullyboy
- catcher
- center
- coach
- combatant
- competition
- contender
- contestant
- cricketer
- disputant
- duelist
- emulator
- end
- enforcer
- entrant
- fencer
- fighter
- footballer
- gamecock
- gladiator
- goon
- gorilla
- guard
- hood
- hoodlum
- hooligan
- infielder
- jock
- jumper
- knight
- lineman
- militant
- opponent
- opposition
- outfield
- outfielder
- player
- plug-ugly
- pugilist
- quarreler
- quarterback
- racer
- rioter
- rival
- rough
- rowdy
- ruffian
- scrapper
- skater
- sport
- sportsman
- squabbler
- strong-armer
- struggler
- swashbuckler
- sword
- swordsman
- tackle
- tailback
- thug
- tilter
- tough
- vier
- wingback
- wrangler
- wrestler
