Cassidy Blows Up His Lines.

With their next game on the road, the Bruins could head back to Boston down 1-3 or if they get things together offensively, they could end up going back to Boston tied 2-2 turning the series into a best of 3 with the Bruins holding home ice advantage. 

However the Bruins are having trouble solving Sergei Bobrovsky and head coach Bruce Cassidy has decided to switch things up. 

To start, David Pastrnak has been reinserted on the first line with Brad Marchand and Patrice Bergeron. 

While Pastrnak has seven points in 10 games so far during the playoffs, he only has one goal and nine shots on net during the second round against Columbus. 

It also looks like David Backes will make his debut during the second round. 

Here's a look at Cassidy's lineup today at practice:

Marchand - Bergeron - PastrnakDeBrusk - Krejci - BackesJohansson - Coyle - HeinenNordstrom - Kuraly - Acciari/WagnerKuhlman

Chara - McAvoyKrug - CarloGrzelcyk - CliftonKampfer - Moore

RaskHalakMcIntyre