The Boston Bruins have lots of question marks heading into Game 5 against the St. Louis Blues.

Of course the main question mark surrounds the status of defenseman Zdeno Chara and Matt Grzelcyk.

While Chara was understandably nowhere to be found during Wednesday's practice, the good news was that Grzelcyk was on the ice however he was wearing a no-contact jersey. 

Urho Vaakanainen skated alongside Grzelcyk on the fourth defensive pairing which could indicate he'll be Cassidy's seventh defenseman if Chara can't go tomorrow. 

John Moore skated in Chara's place on the first pairing. 

Here's a look at today's lines at practice:

Marchand-Bergeron-Pastrnak
DeBrusk-Krejci-Backes
Johansson-Coyle-Heinen
Nordstrom-Kuraly-Acciari

Moore-McAvoy
Krug-Carlo
Kampfer-Clifton
Grzelcyk-Vaakanainen

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