Ground Rules Ball hitting top or face of screen in front of bleacher wall and bouncing back on playing field is in play. Ball hitting top of screen and dropping between screen and wall is a home run. Ball hitting screen and dropping into bleachers is a home run. Ball sticking in screen in front of bleachers is a ground rule double. Ball sticking in vines on bleacher wall is a ground rule double.
Ball coming out of vines is in play.
Ball hitting left field or right field foul markers above painted mark is a home run. Ball hitting fould marker below painted mark and bouncing back on playing field is in play. Ball going under grates in left field or right field and remaining there is a ground rule double. By 1927, the park had assumed its current name in honor of new owner William Wrigley, and a second deck had been added, doubling the capacity to near 40,000. Since then, it has been modernized periodically, but has changed little in appearance or scope.