Jeff Idelson, president of the National Baseball Hall of Fame and Museum in Cooperstown, New York, has spoken to groups of kids before.

But over 1,000, and at the same time?

"Not that many, not in one place," Idelson laughed. "It was great. I've done a lot of fun stuff here. I went to Yoro (in Gifu Prefecture) to see them turn bats at the Mizuno bat factory. I saw them turn an Ichiro bat.