Nnamdi Asomugha’s fourth-quarter knee injury Sunday apparently is serious enough that the 49ers have promoted rookie cornerback Darryl Morris from the practice squad. Morris, undrafted out of Texas State, fills a roster spot created by Aldon Smith’s move Monday to…Extra Point:
Darryl Morris will help the 49ers with a bit of depth, but make no mistake about it, Nmandi off the field pushes the 49ers into a further precarious situation. The Niners are seriously banged up on defense.
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