Ottawa Senators had to trade Erik Karlsson because he's too good
Erik Karlsson, Sharks set to play Josh Norris, Ottawa Senators
SJ Sharks' Erik Karlsson returns to his Ottawa Senators form
Karlsson won't return until confident ankle is 100%
Erik Karlsson in Pittsburgh is among the familiar faces in new places around the NHL, Sports
Could Erik Karlsson return to the Ottawa Senators?
Dorion: Karlsson will start skating in two weeks
Pittsburgh Penguins Won Erik Karlsson Blockbuster Trade
Erik Karlsson addresses a possible return to Ottawa. - HockeyFeed
Senators 2-4 Penguins (Feb 13, 2013) Game Recap - ESPN