© Marc DesRosiers-USA TODAY Sports Karlsson signing fallout Frank Seravalli: The San Jose Sharks now have $26.5 million committed to three defensemen for six seasons – Erik Karlsson, Brent Burns and Marc-Edouard Vlasic. Arpon Basu: The Sharks have about $13 million in salary cap space but have UFAs Joe Pavelski and Joe Thornton, as well