Sergei Bobrovsky Columbus Blue Jackets Autographed Adidas Authentic Pro Hockey Jersey. This Columbus Blue Jackets Hockey Jersey has been hand signed by Sergei Bobrovsky. Mint condition with original factory tags, all numbers and letters are professionally hand-sewn on the jersey which is beautifully signed on the back. To protect your purchase, this item includes a Certificate of Authenticity from AJ Sports with authentication hologram.