NHL Commissioner Gary Bettman says there is not enough data yet to draw conclusions about the link between concussions and a degenerative brain ailment that has been found in four dead hockey players.
Source: http://feeds.boston.com/click.phdo?i=eca6214bd2db92f35e9191fc3078c9e2
Patrick Willis Roddy White Arian Foster Philip Rivers Calvin Johnson Jake Long DeSean Jackson Maurice Jones-Drew