This was set by the Worcester baseball club in 1882. While a 2015 MLB game in Baltimore and all games in the pandemic-shortened 2020 season (except for the NLCS and World Series) were held in closed ballparks with nominal attendance of zero, MLB instead listed the official attendance for these games as N/A, thus allowing the Worcester game to retain the record. Worcester, dead last in the NL for the 1882 season and located in a city that did not meet the NL's population standards, was set to be removed from the NL at the end of the season.