Today, Sun Life Stadium is that last multipurpose stadium in the National League. Three main levels, consisting of 75,000 orange and teal seats surround the playing field. The majority of the seats in the upper deck, except behind homeplate are closed, giving Sun Life Stadium a baseball seating capacity of just over 36,000. At various times throughout the Marlins tenure at Sun Life Stadium tarps have covered many of the upper decks to lessen the effect of having empty seats during the baseball season. However, they have since been removed. Built mainly for football, the outfield fence has many quirks and different angles providing for some interesting plays in the outfield. The left field wall stands 33 feet high as seats for football are retracted behind here. Nicknamed the teal monster, an out-of-town scoreboard was located here until 2010 when it was replaced with advertisements. This was because its was cost prohibitive for the team to keep the scoreboard operating since they plan to move into their new ballpark in 2012. Two HD videoboards are located atop opposite ends of the upper deck to provide fans with video replays and scores around the league.

Because of Sun Life Stadium's massive size and its location, the Marlins are currently constructing a new ballpark in the Little Havana neighborhood, two miles from downtown Miami. Scheduled to open in April 2012, the Marlins new ballpark will have a seating capacity of 37,000. Although the Marlins have played at one of the worst stadiums in baseball since 1993, they have had several successful teams, winning the World Series in 1997 and 2003. The Marlins played their last game at the stadium on September 28, 2011 against the Washington Nationals. They will move into their new ballpark in April 2012. Sun Life Stadium will remain home to the Miami Dolphins and the Miami Hurricanes (NCAA).