from Frank Seravalli of TSN,

... let’s take a look at one X-Factor from each first-round series, a player or scheme that could have the most significant impact on the outcome:

EASTERN CONFERENCE

WASHINGTON VS. PHILADELPHIA

X-Factor: Flyers defenceman Shayne Gostisbehere

Why: Conventional wisdom would suggest Philadelphia’s prayers for an upset centre around Sean Couturier’s ability to frustrate and neutralize the Capitals’ top line of Alex Ovechkin, Nicklas Backstrom and T.J. Oshie. That would not be incorrect — Couturier did it against Pittsburgh’s stars four years ago. But the Flyers will also need to score to win. And so much of that depends on a dynamic Gostisbehere driving play. Last week, the Red Wings seemed to discover the recipe for success against him. They blanketed him in all three zones, swarming his every movement. It led to juicy turnovers, two of which resulted in Detroit goals. Washington would be wise to follow suit - particularly when the game is on the line, considering the Ghost’s flair for the dramatic.

Series pick:Capitals in six

the rest of the playoff matchups...