Elevate your Toronto Blue Jays collection and commemorate a watershed moment in one of baseball's great careers with this Vladimir Guerrero Jr. First Career Grand Slam Beckett Fanatics Witnessed Authenticated 4/10 Ticket from July 20, 2019. Encased in a tamper-proof acrylic sleeve with an inscription commemorating the first four-run shot of the slugger's career, this memorabilia piece captures a moment of MLB history and immortalizes it as the ultimate collector's item. Obtained under the auspices of Major League Baseball, this collectible includes an individually numbered, tamper-evident hologram that can be verified online to certify authenticity.