Professional foul Professional foul In various sports, a professional foul is a deliberate act of foul play intended to bring about an advantage for the perpetrator's team. Professional fouls are usually committed to prevent an opponent from scoring. In association football, a professional foul involves a defender fouling an attacking player in order to prevent them from scoring, or a handball offence that denied an obvious goal-scoring opportunity. The resulting free kick or penalty may offer the attacking team a lower chance of scoring than the original playing position, and the defending player therefore has an incentive to tactically foul the attacking
First-move advantage in chess First-move advantage in chess The first-move advantage in chess is the inherent advantage of the player (White) who makes the first move in chess. Chess players and theorists generally agree that White begins the game with some advantage. Since 1851, compiled statistics support this view; White consistently slightly more often than Black, usually scoring between 52 and 56 percent. White's is about the same for tournament games between humans and games between computers; however, White's advantage is less significant in blitz games and games between novices. Chess players and theoreticians have long debated whether, given perfect play by both sides,