During recovery Lock studied QBs who avoid sacks, injuries

Drew Lock spent the last few weeks studying film while recovering from his sprained right shoulder.The Denver Broncos' second-year starter set out to learn how to skirt the types of injuries that have sidelined him two seasons in a row and sidetracked his progress as a pro.“There is an art to it, and I’ve got to learn that art,” said Lock, who is expected to return to action Sunday when the Broncos (1-3) visit New England (2-2) for a twice-delayed game that was pushed back a da