Packers expect 49ers' fans to create another 'chaotic environment;' Sermon poised to start
John Marksmen 49er Man Cave, Mark Castanon is a well-known 49ers Super Fan. Since 2011, Mark Castanon has channeled all his love for the 49ers into his game day persona, 49erMark.
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Mark Castanon: 49ers Bud Light NFL Super Fan
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