Yesterday was the opening game of Washington Nationals 2009 season.
Apparently, fans are supposed to turn their hats inside out in support of a rally:
Employing the rally cap is wearing a baseball cap with a team’s logo inside out while silently wishing or praying for a losing team to rally and win a game. Usually the rally cap is worn by players and by fans in a superstitious attempt to turn around the team’s luck.
Hence the silly hats in this photo:
And apparently, life doesn't get much better than a baseball game with dad and a blue snow cone:
Unfortunately, the rally did not hold and a really important announcer in baseball died at the game.