John Taube is the owner of J.T. Sports. With well over two decades of experience, his expertise on physical attributes of game-used bats and dating have pinned him as one of the world’s leading experts in bat authentication and grading. Working in conjunction with Vince Malta, Taube has an ongoing commitment to expand the existing knowledge of game-used bats. With over 35 years of combined expertise, bat experts Taube and Malta are the formidable team for PSA/DNA’s game-used bat authentication service. Their reputation and integrity is second to none in the hobby. The duo exhibits strong attention to detail, expertise with labeling variations and insight to restoration. Most importantly, both share a commitment to provide the hobby by adhering to the most standardized and recognized game-used bat evaluation criteria.