Niners are underdogs for a reason against Broncos

Daily 49ers blog for NBC Bay Area website: Denver is a 7-point favorite for Sunday night's game vs. the 49ers, and the reasons are obvious. At the same time, the Niners are dangerous right now. http://www.nbcbayarea.com/news/sports/Niners-Face-Toughest-Test-vs-Broncos-279570042.html