Lock (ribs) didn't practice Wednesday, Aric DiLalla of the Broncos' official site reports.
Coach Vic Fangio noted that Lock's ability to play Sunday against the Dolphins will depend on a few factors that will be evaluated as the week rolls along, while adding that the team wants the quarterback to see some practice reps in advance of the weekend. As long as Lock sits out or is limited at practice, however, Brett Rypien will continue to see added first-team work in his place.