Penguins' Schultz diagnosed with concussion

The news just keeps getting worse for the Pittsburgh Penguins.

Justin Schultz has been diagnosed with a concussion and is going through the league's head-injury protocol, head coach Mike Sullivan told reporters Friday.

The defenseman was forced to leave Thursday's win over the Winnipeg Jets and didn't return after being hit hard into the boards by Dustin Byfuglien.

Schultz was enjoying the best season of his career from a production standpoint with 39 points in 56 games.

He's in his first full season with the Penguins after being acquired from the Edmonton Oilers for a third-round pick before last year's trade deadline.

Earlier Friday, the Penguins announced fellow blue-liner Olli Maatta - who was also hurt Thursday - is expected to miss six weeks with a left hand injury.