Swedish defender who has played for several teams, including the Chicago Blackhawks, with whom he won the Stanley Cup Championships in 2013 and 2015. He has represented Sweden at tournaments like the 2014 Winter Olympics, where he won a silver medal. In 2015, he signed with the Dallas Stars.
He played junior hockey with Hammarby IF in J20 SuperElit. He later played with Djurgardens IF and Frolunda HC in the Swedish Hockey League before making his NHL debut with the New Jersey Devils in 2006.
During the 2012–13 NHL lockout, he moved to Thailand to play for the Flying Farangs and helped the team win the first Land of Smiles title in franchise history.
He won Stanley Cup Championships alongside star Blackhawks winger Patrick Kane in 2013 and 2015.