Button/By S. Bradley

The news came down from Providence (AHL) head coach Rob Murray that defenseman Boris Valabik is going to miss the rest of this season with an injury.

Good thing the P-Bruins continued to import young defensemen today.

Last week, the Bruins’ farm club brought in David Warsofsky out of Boston University. Today the P-Bruins inked Ryan Button, who was a third-round pick of Boston back in 2009. In his fourth season of junior hockey in the WHL, Button skated in 69 games and posted 5-30-35 totals.

While Providence’s playoff hopes are all but mathematically done, at least some of the Bruins’ prospects will get a taste of pro hockey long before returning for training camp next fall.