This Official Major League Baseball was used in a game on 10/11/01 between the Oakland A's and New York Yankees. These are from Game 2 of the ALDS that year. This was a classic series, that featured the Derek Jeter "Flip" play.
Each of our Game Used Baseballs is certified authentic by Major League Baseball and is affixed with an official MLB Authenticated Hologram. The serial number for this ball is GR088584. You can log onto MLB's website to verify at.