He rubbed the ashes tenderly into the asphalt of the schoolyard at Public School 70 in Astoria, where the two had played pickup baseball, football and roller hockey. He smudged them proudly onto a marker on Lower Broadway commemorating the city’s ticker-tape parade for the Mets after their 1969 World Series victory. He dusted them onto Shea’s original home plate location, which is designated by a marker in Citi Field’s parking lot.
But scattering the ashes at some stadiums posed problems. Mr. McDonald’s first attempt, at a Pittsburgh Pirates game in 2009 at PNC Park, was met with a gust of wind, recalled Adam Boneker, 46, a friend who has accompanied Mr. McDonald on many of his trips to ballparks to dump the ashes.
“It was awkward,” Mr. Boneker recalled, adding that they resolved to try it at a Minnesota Twins game at the Metrodome in Minneapolis but, once there, realized that an indoor stadium was not an appropriate setting.
Afterward, at a nearby Irish pub, a frustrated Mr. McDonald excused himself to use the bathroom. He returned smiling and declared triumphantly, “‘I just…