Keith Primeau had this jersey signed for StopConcussions Foundation. It is an authentic Fanatic Pro Jersey with fighting strap. Karlsson is the rare player who can change a game every time he steps onto the ice. The San Jose Sharks, who acquired him in a trade with the Ottawa Senators on Sept. 13, 2018, are counting on him to be that kind of game-changer.

Karlsson has established himself not only as one of the NHL’s best defensemen, but as one of its top players at any position. His speed, puck sense and passing are superb, and he’s proven to be durable and tough despite playing heavy minutes on a nightly basis.