Karlsson just can't skate as efficiently anymore, I mean he's missing his OG ankle bones.
Like even that video that was posted it wasn't a lack of effort, homie just can't pivot.
It's compounded by Penguins being the slowest team in the league. So all of Crosby, Malkin, Karlsson, Letang have to have good skating games or the team is toast.
Contrast that to Giroux, like the guy is slow but since he's surrounded by young fast players he never really has skate really hard all the time. He can be selective.
Penguins stars should each be on a young team where they can be complimentary stars to young legs who carry the team. Instead of being all together and being asked to carry the team.
They will probably blow it up this tdl, and it will be interesting whether they trade Crosby. Like I can't imagine Crosby would be very happy finishing his career by only winning every two games, with no hope of playoffs, even if it's on the Penguins.