Oilers' Eager has concussion

Edmonton Oilers forward Ben Eager has been diagnosed with a concussion, Oilers coach Ralph Kruger announced Wednesday.

. Eager, 29, suffered the injury during a third period fight with Zack Kassian in Edmonton's season-opening victory over Vancouver.

Eager didn't return to the contest following his fight with Kassian, and it's uncertain how long he will be sidelined.

Eager played in just one game this season and has not scored. He had eight goals and five assists last season.