Joe Thornton received a $5,000 fine from the NHL Department of Player Safety Sunday, the maximum allowable under the NHL’s collective bargaining agreement with the NHL Players’ Association, for slashing Tampa Bay Lightning forward Tyler Johnson Saturday. Thornton slashed Johnson on the back of his left leg at 19:51 of the second period of the Sharks 5-2 loss to the Lightning after he got entangled with the forward while skating through the neutral zone.