Complex sentence: In 1977, the stadium replaced Jarry Park Stadium as the home ballpark of the National League's Montreal Expos, who regularly played 81 home games every season until 2003, when the Expos played 22 home games at Hiram Bithorn Stadium in San Juan, Puerto Rico.
Split into simpler sentences: In 1977, the stadium replaced Jarry Park Stadium as the home ballpark of the National League's Montreal Expos. The Expos regularly played 81 home games every season until 2003, when the Expos played 22 home games at Hiram Bithorn Stadium in San Juan, Puerto Rico.