The rosters are set and the 2014-15 NHL season is ready to commence.
With four games Wednesday night and 12 more Thursday, numerous players will be making their NHL debuts. Some, like the Tampa Bay Lightning's Jonathan Drouin or the Calgary Flames' Johnny Gaudreau, entered training camp as favorites to end up on the opening night roster.
Others are more of a surprise, and earned a place on the roster when it wasn't expected. Here's a look at some of the players who might cause fans to say, "Who are these guys?"
Karlsson, 21, was expected to battle fellow Swede Rickard Rakell for a role at center behind Ryan Getlzaf and Ryan Kesler, but both players ended up making it. A second-round pick (No. 53) in 2011, Karlsson led HV71 in scoring (37 points in 55 games) in the Swedish Hockey League in 2013-14 before putting up 12 points in 17 American Hockey League games at the end of the season.