Career
Before playing in the NHL, Forsling played two seasons with Linköping HC of the Swedish Hockey League (SHL).
He was drafted 125th overall by the Vancouver Canucks in the 2014 NHL entry draft. He never played a game for the Canucks. On 29 January 2015, the Canucks traded Forsling to the Chicago Blackhawks in exchange for Adam Clendening. On 11 May 2016, Forsling signed a three-year entry-level contract to join the Blackhawks.
On 6 October 2018, Forsling made his NHL debut in a 5–2 loss against the St. Louis Blues. On 22 December 2018, he recorded his first NHL point after assisting on a Richard Pánik goal in a 3–2 loss against the Columbus Blue Jackets. On 13 November 2016, Forsling scored his first NHL goal against Al Montoya in a 3–2 win against the Montreal Canadiens.
On 24 June 2019, the Blackhawks traded Forsling along with Anton Forsberg to the Carolina Hurricanes in exchange for Calvin de Haan and Aleksi Saarela. He never played a game for the Hurricanes and was sent down to play for their AHL-affiliate Charlotte Checkers. He scored 8 goals and recorded 18 assists in 57 regular season games for the Checkers.
On 8 January 2021, the Hurricanes placed Forsling onto waivers and his contract was picked up by the Florida Panthers the next day. On 15 July, Forsling signed a three-year, $8 million contract to stay with the Panthers. On 7 March 2024, Forsling signed a eight-year, $46 million contract to stay with the Panthers.
He helped the Panthers in the Stanley Cup playoffs as they defeated the Tampa Bay Lightning, Boston Bruins, and New York Rangers. They eventually went on to defeat the Edmonton Oilers four games to three in the Finals to win the first Stanley Cup in Panthers history. The next season, he helped the team reach their second-straight Finals, as the Panthers again defeated the Oilers four games to two to win back-to-back Stanley Cups.
Sweden