Caps defenseman Mike Green
slid along the ice to block a shot by Rangers defenseman Matt Gilroy
and absorbed the puck with the side of his head.
He left the game with 6:11 remaining in the first period following the block and did not return for the start of the second period.
However, he returned to the Capitals' bench about halfway through the second period.
Green missed the last 20 games of the regular season with concussion issues. The shot by Gilroy appeared to hit Green in the helmet/visor. There was no blood on the ice after the play, a good sign Green avoided serious injury.
But with Green's concussion history, any sort of contact with his head has an added importance.
Green scored the series' first first-period goal at 5:59 of the first period to put the Caps ahead 1-0. Green has a point in all four games of this series.
Follow Dave Lozo on Twitter: @DaveLozo