Johansson has played in a number of roles up and down the lineup since being selected by the Washington Capitals with the No. 24 pick in the 2009 NHL Draft.

When Johansson was selected by the Capitals, he had been playing as a wing with Farjestad of the Swedish Hockey League. But in 2009-10, he moved to center and saw his playing time and role increase, finishing with 20 points (10 goals, 10 assists) in 42 games.

The following season, Johansson earned a spot on the Capitals roster for and made his NHL debut in a 4-2 loss to the Atlanta Thrashers on Oct. 8, 2010. He scored his first NHL goal in a 3-1 loss to the Boston Bruins on Oct. 19, and finished his rookie season with 27 points (13 goals, 14 assists) in 69 games.

Johansson would get at least 44 points in each of his next three full seasons -- he had 22 points (six goals, 16 assists) in the lockout-shortened season in 2012-13 - and his flexibility to play different roles aided the Capitals in 2015-16 when he filled in for winger Jay Beagle, who missed two months with a broken hand.

Though Johansson had and NHL career high in goals (24), points (58) and plus-minus (plus-25) in 2016-17, the Capitals' surplus of talent up front made him expendable, and he was traded to the New Jersey Devils on July 2, 2017.

During his first season in New Jersey, Johansson missed all but 29 games because of injuries, and after getting 27 points (12 goals, 15 assists) in 48 games the following season, he was traded to the Boston Bruins on Feb. 25, 2019.

With Boston he played a key role in the 2019 Stanley Cup Playoffs, getting 11 points (four goals, seven assists) in 22 games to help the Bruins advance to the Final, where they lost to the St. Louis Blues in seven games.

Following the season, he signed a two-year contract with the Buffalo Sabres.

Internationally, Johansson has won a silver medal with Sweden at the 2014 Sochi Olympics.

NOTES & TRANSACTIONS

• Signed as a free agent by Karlskoga Bofors (Sweden-2), October 30, 2012.
• Traded to New Jersey by Washington for Florida's 2nd round pick (previously acquired) in 2018 NHL Draft and Toronto's 3rd round pick (previously acquired) in 2018 NHL Draft. July 2, 2017.
• Traded to Boston by New Jersey for Boston's 2nd-round pick in 2019 NHL Draft and Boston's 4th-round pick in 2020 NHL Draft, February 25, 2019.
• Signed as a free agent by Buffalo, July 6, 2019.
• Traded to Minnesota by Buffalo for Eric Staal, September 16, 2020.
• Signed as a free agent by Seattle, August 6, 2021.