KLEE: After preseason Game 1, Broncos should take it easy with Manning

Denver Broncos quarterback Brock Osweiler, right, gets past San Francisco 49ers linebacker Parys Haralson, left, during the second quarter of an NFL preseason football game on Thursday, Aug. 8, 2013, in San Francisco. (AP Photo/Ben Margot)
Denver Broncos quarterback Brock Osweiler, right, gets past San Francisco 49ers linebacker Parys Haralson, left, during the second quarter of an NFL preseason football game on Thursday, Aug. 8, 2013, in San Francisco. (AP Photo/Ben Margot)
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