But Kyle Lohse and the defending World Series champion St. Louis Cardinals spoiled the party with a 4-1 victory before a sellout crowd.
The result led to a number of tongue in cheek tweets questioning whether the unfamiliarity of playing before a capacity crowd rattled the Marlins — who are more accustomed to playing before an ocean of empty orange seats.
The real question, of course, is can the new-look Marlins keep attendance up in their $515 million park?
With a new name, logo and fiery manager and the addition of speedy shortstop Jose Reyes, All-Star closer Heath Bell and veteran starter Mark Buehrle, the Marlins did everything they could this offseason to boost interest in a franchise that has struggled to maintain local support.
Since 1999, the Marlins franchise has ranked 26th or lower in average annual attendance, according to baseball-reference.com. Some of that can be attributed to a hybrid facility that continues to host the Miami Dolphins. And some of that can be attributed to a team that has not made the playoffs since 2003.
But history shows that success on the field does not translate at the box office. In their 2003 World Series campaign, the Marlins still ranked 28th in average attendance (16,089).
All of this begs the question: Will Marlins Park make a difference in the long run?