from Stephen Whyno of the CP at CFRA,

The NHL will have concussion spotters at all 30 arenas this season to help teams identify visible signs and symptoms of the injury.

Under the league's concussion protocol, teams have had spotters at games in the past. But deputy commissioner Bill Daly said some have found it difficult on the road to isolate one person whose sole responsibility is to keep an eye on players who may have suffered a head injury.

The decision to remove a player from a game still resides with team trainers and medical personnel, but now there's guaranteed to be an extra pair of eyes watching.

"It was really an effort to provide an extra tool or an extra alternative for our clubs in performing the spotter function," Daly said by phone Wednesday. "The whole concept of the spotter is to help the trainer and to help other club medical personnel who might not see a given play or really see the results of a given play and really just give them a heads up at what happened."

The concussion spotters will be watching from various parts of arena, depending on configuration. Daly said the most important thing was the spotters having access to live video feeds and replays.

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