Senators' Clarke MacArthur: Suffers another concussion Sunday

MacArthur required assistance off the ice following a hit in Sunday's scrimmage by teammate Patrick Sieloff and has suffered a concussion, Wayne Scanlan of the Ottawa Citizen reports.

Analysis:

This issue becomes much more concerning when his past struggles with concussions (missed nearly all of 2015 because of it) are considered. The veteran winger is expected to undergo evaluation again Monday.