the relatively small foul ground area in general gives an advantage to batters. The ivy-covered walls in the left and right field corners were reduced from 15 to 11 feet in height prior to the 2015 season as part of phase one of the 1060 project. At around the same time, advertising signs above the corners of the left and right field wall were installed, raising the bleachers by about three feet. It is a widespread misconception that the recently added signage are in-play and a part of the wall, neither of which are correct. The distance from where the front row bleachers are to the field, including the newly placed signs, is still 15 feet. Rooftop seats When Wrigley Field was constructed, the buildings along Waveland and Sheffield avenues gave spectators a view of what was going on inside the ballpark, but did not become popular spectator areas until the 1929 World Series. The 1938 World Series brought paying spectators to the rooftops, however, fans typically sat in lawn chairs and brought their own food and beverages. In the mid-1980s, rooftop owners began to organize more formally as businesses, seeking to extract more revenue by updating the rooftops with bleacher-style grandstands. The Sky Box on Sheffield opened in 1993, originally catering primarily to corporate groups. Today, it is complete with a two-tier roof deck, indoor clubhouse, fully staffed bars on three levels, and an elevator. In 1998, the city started requiring rooftop owners to have a license and began to regulate the venues. In 2003, relations between rooftop owners and the Cubs worsened when the team put up a large screen to block the view of the rooftops, exemplifying what is known as a spite fence. The Cubs then sued most rooftop businesses that year, claiming they were stealing from the team's product and "unjustly enriching themselves". In 2004, the building owners agreed to share a portion of their proceeds with the Cubs. Rooftop owners were required to pay the team 17% of their gross revenue in an agreement lasting until 2023. The Cubs obtained permission from the city to expand the ballpark's own bleachers out over the sidewalks and do some additional construction on the open area of the property to the west, bordered by Clark and Waveland, and to close the remnant of Seminary Avenue that also existed on the property. The rooftop seats are now effectively