Our good friend Photi, of Fish Chunks fame, did some research and it turns out that April 10th is the most pivotal day in the Marlins recent history.
Check this out.
NL East Future Preview - Let the Streaks Speak
On April 10th this season the Marlins will host the Dodgers at JRS and I for one will be watching with much more interest than normally applied to any single game in the month of April.