Before Jarry Park Stadium, Montreal's main baseball stadium was Delorimier Stadium, the longtime home of the Montreal Royals. The diamond at Jarry Park had simply hosted youth baseball on a field in the park. However, in early 1960 the Montreal Royals were dropped by the Los Angeles Dodgers as an affiliate.

Looking to improve facilities for a stadium in Montreal, the 3,000 seat Jarry Park Stadium was built, formally opening in August 1960. After the Dodgers ended their affiliation with the Royals, potential new owners of the team had an option on the franchise, with the provision that a suitable ballpark is put in place. Unable to negotiate an agreement to play at the aging Delorimier Stadium, the group looked to spacious Jarry Park as the alternate site. The Jarry Park Stadium was built for this reason. However, even after the construction, the Royals franchise relocated to Syracuse, New York in 1960.

When the original baseball field was later approved for the Expos, it was renovated to a park approaching major league standards. Unroofed extensions were built from the original stands to the left and right field corners, a large bleacher section was constructed across the left field, and a scoreboard was built behind the right-field fence. This work brought the stadium's capacity to 28,500, and the park was approved as the Expos temporary home.

🏟️