Sidney Crosby is on the shelf for concussion symptoms again.
But this time, he doesn't know when he'll be back.
Sid the Kid missed 10 months of hockey last year due to a concussion.
He's only been back for three weeks before missing the past two games.
After missing nearly a year of hockey, the Pittsburgh Penguin star is playing it safe when it comes to his new symptoms.
Crosby said the following about his injury:
With this kind of stuff there's so many different things you could call it; it's not always clear-cut. It's not like a break or anything. I'm treating it as being symptomatic, as I've looked at those symptoms before and (have been) treated for those symptoms before. And it's the same way I'm going to treat them now.
Sid hasn't played since a 3-1 loss to the Boston Bruins.
He believes an elbow from a Bruin may have caused his symptoms.
[Image via AP Images.]