Niners' offensive line is shaky in matchup with Broncos

Daily 49ers blog for NBC Bay Area website: A still-evolving 49ers offensive line -- with players moved into new positions -- plays poorly in preseason game in Denver, forcing Colin Kaepernick to throw under constant duress. http://www.nbcbayarea.com/news/sports/Niners-Offensive-Line-Kaepernick-Prompt-Questions-in-Loss-at-Denver-323347291.html#comments