Add to your MLB collection with this Carl Yastrzemski Boston Red Sox Autographed 2007 Upper Deck SP Legendary Cuts When It Was A Game Jersey Relic #WG-GY Beckett Fanatics Witnessed Authenticated 10 Card. Graded 10 and authenticated, this card is the perfect way to celebrate the career and accomplishments of the Boston Red Sox star. Along with an eye-catching design and his unmistakable signature, it's encapsulated in a tamper-evident case for a lasting display of your Carl Yastrzemski fandom.