The Collaborative International Dictionary of English v.0.48:

Sportsman \Sports"man\ (sp[=o]rts"man), n.;pl. Sportsmen
   (-men).
   One who pursues the sports of the field; one who hunts,
   fishes, etc.
   [1913 Webster]

WordNet (r) 3.0 (2006):

sportsman
    n 1: someone who engages in sports [syn: sport, sportsman,
         sportswoman]

Moby Thesaurus II by Grady Ward, 1.0:

80 Moby Thesaurus words for "sportsman":
   Nimrod, adventurer, amateur athlete, archer, athlete, ballplayer,
   baseballer, baseman, batter, battery, beater, betting ring, bettor,
   big game hunter, blocking back, boneshaker, bowman, cardshark,
   cardsharp, cardsharper, catcher, center, coach, competitor,
   compulsive gambler, courser, crap shooter, cricketer,
   defensive lineman, end, footballer, gambler, games-player,
   gamester, guard, hazarder, hunter, huntress, huntsman, infielder,
   jacker, jacklighter, jock, jumper, lineman, offensive lineman,
   outfield, outfielder, petty gambler, piker, player, plunger,
   poloist, professional athlete, pugilist, punter, quarterback,
   racer, sharp, sharper, sharpie, shikari, skater, speculator, sport,
   sporting man, sportswoman, stalker, tackle, tailback, tinhorn,
   tipster, tout, toxophilite, trapper, venturer, wagerer,
   white hunter, wingback, wrestler