2-time Stanley Cup champion Carl Hagelin makes Penguins retirement announcement amid injury problems
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Kings' Carl Hagelin knows he may be dealt before NHL's trading deadline - Los Angeles Times
Carl Hagelin opens up about career-threatening eye injury - DC Sports King
Carl Hagelin out indefinitely due to injury unrelated to eye
Former Penguin Carl Hagelin retires from the NHL because of an eye injury - CBS Pittsburgh
Ex-Ranger Carl Hagelin retires from NHL due to eye injury