Brutal turnover from Erik Karlsson puts the Penguins in another hole.

The Pittsburgh Penguins have a lot of problems on their back end to start the season, so much so that the decision was made on Sunday to make starting goaltender Tristan Jarry a healthy scratch.

Early on it seemed like the decision from Penguins head coach Mike Sullivan would pay off for the Penguins, with Penguins goaltender Alex Nedeljkovic doing a good job of holding down the fort through the first 40 minutes of the game. Unfortunately for both Nedeljkovic and the Penguins however, things really came off the rails in the third period.

In the end Nedeljkovic would finish the game with a .861 save percentage after giving up 5 goals on 36 shots, but there's no question that the Penguins blue line deserved a fair share of blame for putting Nedeljkovic in some very bad spots.

Perhaps the worst example would come during the game's third period, after the Winnipeg Jets had rallied back to take a 1 goal lead, when Penguins defenseman Erik Karlsson made a questionable cross ice pass that resulted in a brutal turnover. Karlsson's pass would end up on the stick of Jets defenseman Neal Pionk who, after a nifty drop pass after entering the Penguins zone, would end up uncontested in front of the Penguins net to finish off the play he started by tipping the puck past Nedeljkovic.

The advanced analytics would appear to support the fact that the Penguins as a whole could use some improvement defensively, with J Fresh Hockey recently compiling data from Top Down Hockey that illustrates the Penguins have one of the highest expected goals against at 5 on 5 among the NHL's 32 teams.

Head coach Mike Sullivan implemented some big changes on Sunday, and it will be very interesting to see where the Penguins go from here.