Watch: Pivotal Avalanche goal upheld after lengthy offside review

An offside review appears set to play a big role in deciding the final playoff spot out West.

Tyson Barrie of the Colorado Avalanche scored a pivotal goal in the second period of Saturday's game against the St. Louis Blues, but it was challenged due to an apparent offside as the puck appeared to cross back over the blue line earlier in the play.

After a lengthy review, the goal was upheld as there were no definitive replays showing the puck leaving the attacking zone. But it was really as close as it gets.

You be the judge:

The Blues need a single point out of this game to clinch a playoff spot, while the Avalanche require a regulation win.