Base runners should not shout or distract a fielder getting under an infield fly
Made well-known recently by Alex Rodriguez, players should not yell or do anything to distract fielders settling under an infield fly. Many in baseball consider it bush league. The Yankees led by two runs when Jorge Posada popped up to third base with two out in a May 30, 2007 game at Rogers Centre. Rodriguez, running from first base, shouted Ha as he passed third baseman Howie Clark, who then backed off and allowed the ball to drop.