Found October 12, 2011 on baltimoresun.com:
Baltimore_ravens_v_da1e
Ravens center Matt Birk was required by the new CBA to wear a microphone, but took it off due to discomfortVeteran Ravens center Matt Birk said Wednesday he will appeal a $5,000 fine from the NFL for failing to wear a microphone under his jersey as prescribed by the new collective bargaining agreement.
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