Sharks general manager Doug Wilson said Wednesday that the team extended Vlasic because he "can play in all situations and has blossomed into a very trusted player on both sides of the puck." He said the Sharks are "lucky to have him on our team for the next six seasons."
The 25-year-old Vlasic led the Sharks with 171 blocked shots last season, including a franchise-record eight vs. Los Angeles on Dec. 23. In six seasons with San Jose, he has appeared in 471 regular-season games and has racked up 133 points.
The Montreal native was drafted 35th overall by San Jose in 2005.