Ключевые слова: american, arrow, attack, background, ball, black, chalk, chalkboard, championship, closeup, coach, competition, concept, design, diagram, drawn, field, football, game, goal, graphic, hand, holding, instruction, league, male, man, offense, organization, person, pitch, plan, playing, professional, quarterback, rugby, running, safety, scheme, score, sign, sketch, space, sport, strategy, success, tactic, team, teamwork, trainer,