A two-time Norris winner (2011-12, 2014-15), Karlsson also was runner-up in 2015-16 and 2016-17. Even though last season was difficult -- he was minus-25 and his 62 points (nine goals, 53 assists) were his lowest total since 2010-11 (45) -- his new teammates know what he's capable of doing.
"The thing that just jumps out right away is his skating ability" Sharks captain Joe Pavelski said. "He's fast. He can get up in the play, he can lead rushes, he can get back, he's great with the puck, good shot, good vision. ... He makes all the plays and checks all the boxes."
Karlsson, who finished third in ice time per game last season (26:44), hasn't finished lower than fourth in the past six seasons. Since his rookie season in 2009-10, he has the most points (518) and power-play points (195) among defensemen.
"It's exciting for us to get those types of passes and those types of playmaking abilities back there because it's only going to create more offense for us," forward Evander Kane said. "He's a special player and he sees the ice real well back there"
Karlsson joins a defense in San Jose with Brent Burns, the 2016-17 Norris Trophy winner who also finished third in 2015-16 and is a perennial contender for the award.
"I think when you get to play with a guy who can skate like that, make plays, confident with the puck, it's great," Burns said.
Karlsson received 11 first-place votes to edge Victor Hedman of the Tampa Bay Lightning, the 2017-18 Norris winner, who received five first-place votes.
Voting totals (points awarded on a 5-4-3-2-1 basis): Erik Karlsson, Sharks, 71 points (11 first-place votes); Victor Hedman, Lightning, 62 points (five first-place votes); Drew Doughty, Los Angeles Kings, 42 points (two first-place votes); Seth Jones, Columbus Blue Jackets, 17 points; P.K. Subban, Nashville Predators, 16 points; Roman Josi, Predators, 9 points; Alex Pietrangelo, St. Louis Blues, 9 points; Brent Burns, Sharks, 9 points; John Carlson, Washington Capitals, 9 points; Ivan Provorov, Philadelphia Flyers 9 points; Dougie Hamilton, Carolina Hurricanes, 3 points; Shayne Gostisbehere, Flyers, 3 points; John Klingberg, Dallas Stars, 2 points; Dustin Byfuglien, Winnipeg Jets, 2 points; Kris Letang, Pittsburgh Penguins, 2 points; Charlie McAvoy, Boston Bruins, 2 points; Morgan Rielly, Toronto Maple Leafs, 2 points; Oliver Ekman-Larsson, Arizona Coyotes, 1 point.