DF+mighty+Casey+has+struck+out.

This line "mighty casey has struck out" means that the batter struck out to end the game when he had a shot to win or tie the game. The act that he did is probably the worst feeling in the game of baseball. It leaves you mad, frustrated, upset and disappointed. You feel like you blew an opportunity to to be the hero and help out the team. Also, you feel you let your team and the fans down as well. You can't stand the fact that you were the one that ended the game. Seeing the opposing teams closer all fired up in triumph and the other team celebrating on your home field slapping each other five, In addition, sports talk radio shows blame you and you will become the billy-goat of the game. The media asking you the same questions over and over about what went wrong with that at-bat or that game. The wait seems forever for the next game to come your just waiting for the same opportunity and you know that you will get a hit.

Great analysis of this line. Striking out has such misery associated with it - so, so true!