Sanchez worries he ruined an opportunity by playing like crap

Broncos quarterback Mark Sanchez lost two fumbles in Saturday night’s preseason game against the 49ers, and he worries that those two mistakes could cost him the starting job. “It’s difficult playing like crap on two plays and ruining an opportunity. That’s difficult,” Sanchez said after the game. Aside from those two fumbles, Sanchez didn’t play…