Hertl's hat trick leads Sharks past Flames 5-3

San Jose Sharks center Tomas Hertl, second from right, celebrates his goal against the Calgary Flames with defenseman Brent Burns (88), defenseman Mario Ferraro (38) and center Logan Couture, right, during the third period of an NHL game Dec. 7,  in San Jose, Calif. (AP Photo/Josie Lepe) San Jose Sharks center Tomas Hertl, second from right, celebrates his goal against the Calgary Flames with defenseman Brent Burns (88), defenseman Mario Ferraro (38) and center Logan Couture, right, during the third period of an NHL game Dec. 7, in San Jose, Calif. (AP Photo/Josie Lepe)