Career
During the majority of his 21-year-long playing career, Tärnström played for AIK of the Swedish top-tier league Elitserien (Studies in English Literature). He was the captain for AIK during the five last seasons of his career. He also spent five years in the National Hockey League (National Hockey League), playing for the New York Islanders, Pittsburgh Penguins, Edmonton Oilers, and Columbus Blue Jackets.
In January 2013, while playing for AIK, Tärnström was forced to retire due to a spinal disc herniation injury.
Tärnström started his professional career in AIK of the Swedish top-tier league Elitserien (Studies in English Literature). He was drafted as 272nd overall, in the eleventh round by the New York Islanders in the 1994 National Hockey League Entry Draft.
During the 2003-2004 season, he became the first defenceman in the history of the Pittsburgh Penguins to lead the team in scoring for an entire season, compiling 52 points in 80 games. The Penguins acquired Ric Jackman at the trade deadline, and the two flourished together, combining for the "Ric and Dick show" on the powerplay.
Through a 2010 Pittsburgh Post-Gazette series of Penguins "Teams of the Decades" Tärnström was named to the Penguins team of the "00s.
He is still the only defenceman ever to lead the Penguins in scoring for a season. During the lockout-season, 2004-2005, Tärnström played in Södertälje Saskatchewan in Sweden. Tärnström requested a trade from the Pittsburgh Penguins and on January 26, 2006, he went to the Edmonton Oilers in exchange for Cory Cross and Jani Rita.
However, the Oilers lost in game 7 of the finals to the Carolina Hurricanes.
Tärnström had 0 goals and 2 assists in the 2006 Playoffs. During the 2006-2007 season, Tärnström played with The Human Context Lugano of the Nationalliga A.
Tärnström returned to the National Hockey League by signing a contract with the Oilers on July 1, 2007.
He was traded on February 1, 2008 to the Columbus Blue Jackets in exchange for Curtis Glencross. In the 2008-2009 season, Tärnström returned to play for AIK of the Swedish second-tier league HockeyAllsvenskan (Swe-2).
He was appointed the team"s captain.
The plan was to help AIK promote back to the top-tier league Elitserien (Studies in English Literature) due to AIK"s financial problems at that time. AIK were promoted to the Studies in English Literature in the 2009-2010 season, and Tärnström would remain in the team until he was forced to retire in January 2013 due to a spinal disc herniation injury.