There are six mistakes in this article:

1) I had 3,109 balls when this was published, not "nearly 4,000."
2) I had been to 12 stadiums that have closed, not eight.
3) I've caught balls after games, not just before or during.
4) I got the ball from Ausmus before the game, not between innings.
5) The paragraph that begins "But there are other spots" is all wrong.
6) Kayakers would be at least 380 feet from the plate, not 360.