Gretzky pays tribute to Muhammad Ali
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Remembering the time Muhammad Ali fought Oilers tough guy Dave Semenko - The Hockey News
Dave Semenko has passed away after a battle with cancer : r/hockey
Off-Season post - The time Dave Semenko fought Muhammad Ali. (I'm sure some you weren't aware, if this is old news to you, let it be. New fans all the time)
Would an older athletic great (in his 50's) be able to compete as a mediocre athlete, or is the decline too steep? - Quora
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Former NHL tough guy Dave Semenko dead at 59
Blue Sky –
Dave Semenko – Wikipedia
Dave Semenko, the enforcer who opened up the ice for Wayne Gretzky, dies at 59