ESPN just published these baseball odds. I thought it was pretty interesting.
There is a 1 in 11 chance that a game will go into extra innings.
There is a 1 in 325 chance that if you attend a game you will see a triple play and there is a 1 in 702 chance you will see a batter hit for the cycle.
There is a 1 in 806 chance you will see a no-hitter and a 1 in 2,610 shot that a batter will get six hits in a nine-inning game.
There is a 1 in 10,287 chance you will be witness to a perfect game.
There is a 1 in 12,492 chance that you will see an unassisted triple play.
There is a 1 in 13,453 chance you will see someone hit four homers in a game.