The Dallas Stars were fined $100,000 by the National Hockey League on Monday for an optional practice session during the mandatory Christmas break that was attended by several young players.

That session the day after Christmas was in violation of the collective bargaining agreement. Any sort of on-ice activity or travel for games is prohibited on Christmas Eve, Christmas Day and the 26th.

Stars coach Pete DeBoer mentioned before Friday’s game, their first after that three-day break, that he was at the team’s practice arena on Thursday, the day after Christmas. He said they “had an optional, and of course, the young guys all show up for the optionals, like they’re supposed to do.”

DeBoer acknowledged Saturday he may have made a mistake by providing ice for players to skate during the break. He also then described it as “voluntary ice” instead of a scheduled optional practice.

PANTHERS 5, RANGERS 3 >> Jesper Boqvist scored twice, including the go-ahead goal in the third, and Florida beat visiting New York.

Eetu Luostarinen, Aleksander Barkov and Mackie Samoskevich also scored for Florida, and Uvis Balinskis had two assists. Sergei Bobrovsky made 33 saves.

Florida took a 3-2 lead off Boqvist’s goal in the second when he found a loose puck and knocked it into the open net with a scrambling Igor Shesterkin out of position. New York’s Chris Kreider tied it with a power-play goal 5:19 into the third.

JETS 3, PREDATORS 0 >> Gabriel Vilardi scored a pair of power-play goals a minute apart in the third period to help Winnipeg extend its winning streak to four games with a shutout of visiting Nashville.