Baseball in Louisville dates back to 1876 when the Louisville Grays began playing as part of the National League. Soon after the turn of the 20th century, minor league baseball arrived in Derby City and for 70 years, the Louisville Colonels commanded it. Their departure in 1972, however, led to a period of inactivity, as well as a period of unemployed umpires roaming the city shouting "SAFE!" at landing birds. Ten years later, baseball returned with the arrival of the Louisville Redbirds, who eventually became the RiverBats in 1998, and simply the Bats in 2002. Over the years this franchise has spent time as the affiliate of three big league teams: the St. Louis Cardinals, the Milwaukee Brewers, and its current affiliate, the Cincinnati Reds.