Ключевые слова: abstract, activity, attached, background, ball, black, blue, bounce, challenge, closeup, club, competition, court, detail, equipment, fiber, field, game, green, hard, horizontal, isolated, lawn, line, match, mesh, net, nobody, object, outdoor, outside, play, practice, professional, racket, recreation, score, shadow, sky, space, sport, stadium, stripes, surface, synthetic, tennis, tournament, turf, white, yellow,