We tried to warn you that officiating might have a large say in how the Stanley Cup Final plays out.

For a brief moment. P.K. Subban had scored the opening goal for the Nashville Predators in Game 1, just 10 minutes into the first period. What a shot!

But, alas. The Penguins immediately challenged that the play was offsides. The player in question? Predators winger Filip Forsberg, who started the zone entry along the boards. And the Penguins’ bench had a clear line of sight on it.

The officials reviewed it and deemed the goal disallowed due to offsides. It seems that Forsberg’s right skate was already off the ice before the puck had crossed the blue line completely, which means it was still offsides.

You can have one skate behind the blue line as the puck crosses, but as soon as one skate is in the zone and one skate is in the air, the puck had better be across the line.

League explanation on overturned goal. pic.twitter.com/MmyOXiW8cc — Adam Vingan (@AdamVingan) May 30, 2017

Here’s the thing though: the offsides challenge sucks. I think even Penguins fans can agree on this. Leave your messages of agreement in the comments.