You didn't have to watch the preseason very long to realize the referees were being really strict with slashing penalties. The NHL indeed decided to make slashing a point of emphasis this season and the result has been a ton of penalties.
Just about the only slash that hasn't been called this season just so happened to end Matt Niskanen's Friday night early.
Late in the second period, Niskanen appeared to take a slash from New Jersey Devils defenseman Jimmy Hayes as Hayes brought his stick down and appeared to clip the hand of Niskanen.
You can see the play in the video player above.
Niskanen soon went down the tunnel. The team announced he would not return, giving the reason as "upper body."
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