This baseball was used by Mike Yastrzemski on August 7, 2019 vs. the Washington Nationals. It was obtained under the auspices of the Major League Baseball Authentication Program and can be verified by its numbered hologram at MLB.com. It also comes with a hologram from Steiner Sports and a certificate of authenticity. To ensure authenticity, the hologram can be reviewed online. This process helps to ensure that the product purchased is authentic and eliminates any possibility of duplication or fraud.