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BREAKDOWN: Dolphins key position battles
By Harvey Fialkov |South Florida Sun-Sentinel August 18, 2008 Dolphins key position battles
Fullbacks
Reagan Mauia vs. Boomer Grigsby
The more versatile Grigsby supplanted Mauia as the starter Saturday and boosted his chances with a 7-yard catch, key blocks and a special-teams tackle. EDGE: Grigsby
Quarterbacks
Josh McCown vs. John Beck
Neither took a snap Saturday but McCown has outplayed a jittery Beck in camp and provides veteran insurance for a fragile Chad Pennington. Beck is the only one of the four QBs not hand-picked by this regime. EDGE: McCown
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