Union Park

Union Park was a ballpark in Pittsburgh, PA. The first major-league game the register places here was on August 22, 1878 and the last on August 24, 1878. The register files it under the National League.

3 major-league games in this archive were played here, in 1878. The park register names the Providence Grays as having played here. Its recorded capacity is 17,000.

The earliest game in the Retrosheet logs was on August 22, 1878, when the Indianapolis Blues beat the Providence Grays 5–1. John Ward started for the Providence Grays and Tom Healey for the Indianapolis Blues. Billy McLean was the plate umpire. The latest game in the Retrosheet logs was on August 24, 1878, when the Providence Grays beat the Indianapolis Blues 11–1. John Ward started for the Providence Grays and Tom Healey for the Indianapolis Blues. Billy McLean was the plate umpire.

The major leagues also played in Pittsburgh, PA at Exposition Park I (1882–1884), Exposition Park II (1883–1883), Recreation Park (1884–1890), Exposition Park III (1890–1915), and Forbes Field (1909–1970), and 2 other grounds.