I didn't find a video of the entire celebration, which was unfortunate. And I have to say I was impressed. As the Celtics drove around the field in duck boats it absolutely poured. And the C's clearly did not care. They were great sports about it all. The video does catch the team sprint to the mound and Paul Pierce's wild pitch. It was the kind of pitch that would have led me to yell, "Give the pitcher a bucket, he's throwing up!" in my baseball playing days. Enjoy.

2008 NBA Champion Boston Celtics First Pitch at Fenway Park (via DJRYB13)