Bob Costas mistakenly calls Guardians pitcher Justin Bieber: 'I
Justin Bieber is named at the baseball in commentator blunder
Bob Costas calls Shane Bieber 'Justin,' Ron Darling has funny response
Justin Bieber just threw his 84th pitch - Emmy Award-winning sportscaster Bob Costas hilariously slips up, calls All-Star Shane Bieber, pop star Justin Bieber
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Justin Bieber is named at the baseball in commentator blunder
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Bob Costas calls Shane Bieber 'Justin,' Ron Darling has funny response