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Calvin Johnson continues a strong camp and Rashean Mathis has another good day

ESPN.com | August 15, 2015

Related Topics: Calvin Johnson, Rashean Mathis, Jim Caldwell (American football), Darius I, Dan Orlovsky

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  • Michael Rothstein, ESPN Staff Writer Close
    • Previously covered University of Michigan for ESPN.com and AnnArbor.com
    • Also covered Notre Dame for Fort Wayne Journal Gazette
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ALLEN PARK, Mich. – Jim Caldwell was happy to have some humidity Saturday afternoon. Football coaches, for multiple reasons, always seem to like that.

It tests the conditioning of players.

See full article at ESPN.com