The given text is a play-by-play commentary of a baseball game. The game features several unusual events, including a grand slam home run, a player catching a ball that hits the top of the wall, a ball getting stuck in the catwalk, a player breaking a bat and literally "knocking the cover off the ball", a fan running onto the field, and a player getting hurt after running through the wall in the outfield. Additionally, the game features a switch pitcher making his major league debut, and the commentators discuss the unique rules surrounding this type of pitcher.
Here are the key facts from the text:
1. The Nationals' Michael Morse hit a grand slam.
2. The ball hit the top of the wall and was initially called in play.
3. The umpires reviewed the play and determined it was a home run.
4. A fan ran onto the field and was body-blocked by a security guard.
5. A beach ball was on the field during the game.
6. A player's bat broke when he hit the ball, literally knocking the cover off.
7. A foul tip hit the catcher's mask.
8. The sprinklers on the field turned on during the game.
9. A player, Turner Ward, made a diving catch and then went through a door in the outfield wall.
10. Pat Venditti made his major league debut as a switch pitcher.
11. Venditti pitched left-handed to a left-handed hitter and then switched to pitching right-handed to a right-handed hitter.
12. The game was delayed due to lightning and safety concerns.