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The Norris Trophy finalist has a projected four-month timetable for recovery<p>Defenseman Erik Karlsson was arguably among the biggest reasons the Ottawa Senators put up a fight against the eventual repeat Stanley Cup champion Pittsburgh Penguins in the Eastern Conference finals, but he might not be …

Read more at CBS Sports: http://www.cbssports.com/nhl/news/senators-erik-karlsson-could-miss-start-of-next-season-after-foot-surgery/