Mattila is a cerebral defender who isn’t a major standout on the back end, but when you watch him closely, he does impress. He is quick to pick up his man and covers the gap very well. He is a workhorse who can play in a variety of roles on both sides of the ice, showing a willingness to get the job done in front of the net no matter what. A very strong backward skater, Mattila uses this strengt...