This autographed pitching rubber by Madison Bumgarner is a must-have for any San Francisco Giants fan or baseball memorabilia collector. The signature is authenticated by James Spence Authentication (JSA) and comes with a JSA Authentic COA for added peace of mind. The modification description states that it was autographed by Madison Bumgarner himself, making this item a unique and valuable addition to any collection. The baseball team logos on the pitching rubber showcase the SF Giants team. This modified item is in excellent condition and offers a great way to remember one of the best pitchers in Giants history.