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The Biebs took to Twitter to defend himself against claims of being a front-runner<p>Love him or hate him, Justin Bieber is nothing if not self-aware.<p>After being endlessly mocked for posting a photo of himself wearing a Pittsburgh Penguins’ jersey on Instagram, the singer took to Twitter to defend his …

Read more at CBS Sports: http://www.cbssports.com/nhl/news/justin-bieber-defends-jersey-choices-says-he-doesnt-know-much-about-sports/