Mike Greenberg made fun of Mike Golic for taking his daughter to see the new movie "Justin Bieber: Never Say Never." Bad idea. Greeny didn't realize Bieber was listening.
On Thursday, the music superstar and his manager, Scooter Braun, called in to "Mike & Mike in the Morning" to challenge Greenberg to an athletic competition in four sports: basketball, hockey, soccer and golf. Listen
Who would win in a competition between Greeny and Bieber? Vote in the poll ...
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