<P> GCL Cardinals (GCL) (1998--present) Jupiter Hammerheads (FSL) (1998--present) Montreal Expos (MLB) (spring training) (1998--2002) St. Louis Cardinals (MLB) (spring training) (1998--present) Palm Beach Cardinals (FSL) (2003--present) GCL Marlins (GCL) (2003--present) </P> <P> Roger Dean Stadium is a baseball stadium located in the Abacoa community of the town of Jupiter, Florida . The stadium was built in 1998, holds 6,871 people, and features luxury sky - box seating, two levels of permanent seating, parking and concessions . The Roger Dean Stadium Complex is the only stadium in the country to host four minor league teams: the Jupiter Hammerheads and Palm Beach Cardinals of the Class A-Advanced Baseball Florida State League, and the Gulf Coast Marlins and Gulf Coast Cardinals of the Rookie - level Gulf Coast League . </P> <P> Roger Dean Stadium is one of only two stadiums in Florida to host two Major League Baseball teams annually for spring training: the Miami Marlins and St. Louis Cardinals (the other is The Ballpark of The Palm Beaches, which opened in 2017, hosting the Washington Nationals and Houston Astros). In both venues, the teams share the main stadium where the games are played . However, the teams have their own practice fields, outdoor batting cages, several pitching mounds, and state - of - the - art conditioning rooms . </P> <P> Through 2002 the Montreal Expos shared the stadium with the Cardinals, until they swapped with the Marlins as part of the Marlins sale to Jeffrey Loria . The Expos, now known as the Washington Nationals, then moved to Space Coast Stadium in Viera, Florida . </P>

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