Filip Zadina had a career night Thursday as he assisted on two goals in the second period and scored two more in the third to lead the San Jose Sharks to a 5-2 win over the Calgary Flames at the Scotiabank Saddledome. Zadina assisted on goals by Mikael Backlund and Justin Bailey in the second period as the Sharks took a 2-1 lead by the 7:50 mark of the second period. Then with his team holding onto a 3-2 lead, Zadina scored goals 37 seconds apart to put the Sharks up by three with 14:45 left in regulation time. The four-point night was the first of Zadina’s five-plus year NHL career, as the Sh…