Report: Defenseman attacks Mark Stone during team practice

You might remember Patrick Sieloff.

The young Ottawa Senators' blueliner made a name for himself the wrong way last year when he delivered a hit on the third day of Senators training camp that concussed fan favorite Clarke McArthur. It was the veteran's fourth concussion in 18 months and put his career in doubt. MacArthur’s teammates immediately took issue with the hit and a fight broke out between teammates. Sieloff was then pulled from the main group and put with players destined for AHL Binghamton.

It certainly seems like the agitator hasn't learned his lesson, as there was another incident at training camp this season.

If he keeps up this behavior, Sieloff likely won't be a Senator for much longer.