QB&A with David Carr: Breaking down Mahomes and Allen rivalry

FRESNO, Calif. (KFSN) -- This play brings the divisional circular of the NFL playoffs, and the marquee crippled features a section quarterback.

In this week's QB&A, David Carr says there's a cardinal quality successful the rivalry betwixt Josh Allen and Patrick Mahomes and that of Tom Brady and Peyton Manning.

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