Versteeg put the Panthers up 5-3 with his second power-play goal of the game when he beat goalie Dwayne Roloson from the low right circle 25 seconds into the third period. Florida scored five goals in nine chances with the man advantage.
The Panthers went ahead 6-4 when Weiss scored at 15:28 of the third. Jason Garrison added a late power-play goal.
Tomas Kopecky and Sean Bergenheim had the other goals for the Panthers.
Teddy Purcell, Victor Hedman, Vincent Lecavalier and Steven Stamkos scored for Tampa Bay, which played at home for the first time since its arena underwent around $40 million in offseason improvements. The Lightning had lost four in a row to finish a season-opening, five-game trip 1-2-2.
In Tonronto, David Jones scored 1:11 into overtime to lift Colorado over Toronto. Jones buried the rebound of Kyle Quincey’s shot past goalie James Reimer .
Daniel Winnik and Milan Hejduk also scored for Colorado (5-1). Phil Kessel and Nikolai Kulemin had goals the Maple Leafs (3-0-1).
The Avalanche went 5-0 on their longest road trip of the season. It was Colorado’s first perfect mark in a trip that long.
Jean-Sebastien Giguere started in goal for Colorado against his former team. Giguere, who signed a two-year deal with the Avalanche in the summer, was the Maple Leafs’ opening-night starter last season.
In Winnipeg, Manitoba, Kyle Wellwood scored 8 seconds into the game, and the reborn Winnipeg Jets earned their first win by beating Pittsburgh.
Tanner Glass netted Winnipeg’s other goal, Alex Burmistrov had two assists, and Ondrej Pavelec stopped 28 shots to earn the win for the Jets — formerly the Atlanta Thrashers.
Zbynek Michalek had the only goal for Pittsburgh, which got 33 saves from Marc-Andre Fleury.
Heading into the game, the Jets (1-3) were one of three winless NHL teams. The other two, the New York Rangers and Columbus Blue Jackets, were idle Monday.
Pittsburgh (3-2-2), which played without top forward Sidney Crosby and Evgeni Malkin , has lost two in a row.
After the opening faceoff, passes between Nik Antropov and Burmistrov ended with Wellwood beating Fleury. Wellwood tied former Thrashers player Ron Petrovicky for the franchise’s fastest goal.
In Edmonton, Alberta, Ryan Smyth scored the winning goal and added an assist as Edmonton rallied with three goals in the third period to beat Nashville.
Taylor Hall and Ryan Jones also scored and captain Shawn Horcoff had three assists for the Oilers, who are 2-1-1 after finishing last in the NHL for two straight seasons.
Sergei Kostitsyn had the lone goal for the Predators (2-2-1), who have lost three in a row following two wins to open the season. Nashville recorded only 12 shots, and yielded 25 to Edmonton.
Edmonton outshot Nashville 19-9 in the final two periods.
Ryan Nugent-Hopkins , taken No. 1 overall in this year’s NHL draft, scored four goals in his first three games, including a hat trick on Saturday in a loss to Vancouver. He added his first assist against the Predators by helping to set up Hall’s goal.
In San Jose, California, Teemu Selanne scored a pair of first-period goals and Anaheim held off San Jose in its best start since the Ducks’ Stanley Cup-winning season five years ago.
Corey Perry , last season’s NHL MVP, scored for the second straight day as the Ducks won their fourth straight. In his first start of the season, Dan Ellis made 41 saves. Anaheim has won three times in four days, including a 1-0 victory over the Sharks on Friday.
Marc-Edouard Vlasic and Brent Burns scored for San Jose, which has lost three straight since a season-opening win. Antti Niemi was sharp at times, making 19 saves. The Sharks goalie missed training camp and the start of the season after having a cyst removed from near his knee.
