Greg Murrey stood up in the upper deck of Turner Field last August to help Braves fans boo the Yankees' Alex Rodriguez, who had come out to pinch-hit. But Murrey lost his footing, fell from his second row seat and then plunged 40 feet to his death. In a lawsuit filed Tuesday, his family accused the Atlanta Braves and Major League Baseball of disregarding fans' safety by putting up inadequate guard railings. Murrey, 60, fell over a 30-inch railing. His family's suit asserts that such railings should be at least a foot higher, and it says that the Braves and Major League Baseball knew it and declined to incur the expense of raising the railings.