Hack-a-Shaq by teams that are trailing near the end of the game. Basketball, unique among major world sports, permits intentional fouling to gain a strategic advantage; in other sports, it is considered an unfair act or professional foul. Once the fouling team enters the penalty situation, the fouled team is awarded free throws. The typical NBA player makes a high enough percentage of his free throws that, over time, opponents' possessions that end with free throws will yield more points than possessions in which the opponents try to score a field goal. Even the highest-scoring NBA teams average only about 1.1
First-move advantage in chess position, but with Black's knight moved to e4, arises in Petroff's Defense after 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5. That position offers White better chances precisely because Black's extra move (...Ne4) allows the advanced knight to become a target for attack. Finally, symmetrical positions may be difficult for the white player for psychological reasons. Watson writes that anyone who tries the Exchange French, "even if he thinks he is playing for a win, assume[s] a psychological burden. White has already ceded the advantage of the first move, and knows it, whereas Black is challenged to find