Hornqvist, a 33-year-old forward, scored 32 points (17 goals, 15 assists) in 52 regular-season games and two points (one goal, one assist) in four postseason games. He has three seasons left on a five-year, $26.5 million contract ($5.3 million average annual value) he signed with the Penguins on Feb. 27, 2018.
Selected by the Nashville Predators in the seventh round (No. 230) of the 2005 NHL Draft, Hornqvist has scored 480 points (238 goals, 242 assists) in 770 regular-season games with the Penguins and Predators, and he has 46 points (25 goals, 21 assists) in 90 Stanley Cup Playoff games.
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Hornqvist won the Stanley Cup with the Penguins in 2016 and 2017.
“A proven winner and champion, Patric brings a level of competition to our club,” Florida general manager Bill Zito said. “He is a talented veteran presence who plays with an edge and we look forward to what he can add to our group.”
Matheson scored 20 points (eight goals, 12 assists) in 59 regular-season games for the Panthers and no points in two postseason games. The 26-year-old defenseman has six years remaining on an eight-year contract he signed with the Panthers on Oct. 9, 2017.
Selected by Florida in the first round (No. 23) of the 2012 NHL Draft, Matheson has scored 91 points (33 goals, 58 assists) in 299 regular-season games and has one assist in seven postseason games.
“He can really skate,” Pittsburgh general manager Jim Rutherford said. “He plays the way that we like to play. He’s got a good shot. He can skate. I feel that he’ll fit into our system very nicely.”
Sceviour, a 31-year-old center, scored 16 points (six goals, 10 assists) in 69 regular-season games and no points in two postseason games. A fourth-round pick (No. 112) by the Dallas Stars in the 2007 NHL Draft, he has one season remaining on a three-year contract he signed with Florida on Feb. 12, 2018. He has scored 141 points (59 goals, 82 assists) in 454 regular-season games with the Panthers and Stars, and he has eight points (three goals, five assists) in 19 postseason games.
Rutherford said he expects Sceviour will help the Penguins on the penalty kill. He was tied for second on Florida with an average of 2:30 of shorthanded ice time per game this season.
It is the first transaction for the Panthers under Zito, who was hired Sept. 2 after Dale Tallon left the organization Aug. 10 after 10 seasons. The Panthers, who lost to the New York Islanders in four games in the best-of-5 Stanley Cup Qualifiers, have not won a playoff series since 1996, when they advanced to the Stanley Cup Final before being swept by the Colorado Avalanche.
The Penguins, who lost their qualifier series to the Montreal Canadiens in four games, traded forward Nick Bjugstad to the Minnesota Wild on Sept. 12 for a conditional pick in the 2021 NHL Draft, and they acquired forward Kasperi Kapanen for a first-round pick (No. 15) in the 2020 NHL Draft in a trade with the Toronto Maple Leafs on Aug. 25.
It was not an easy decision to trade Hornqvist, Rutherford said.
“There’s no question we will miss his leadership and we will miss him,” he said. “He is one of the very top character players in our league with his leadership. And that’s why Florida wanted him. They’ve made some changes there and they want to change their culture, similar to what I talked about when I first came to Pittsburgh (in June 2014).”
NHL.com independent correspondent Wes Crosby contributed to this report