All four of the Broncos' quarterbacks were absent after Jeff Driskel tested positive for Covid-19 on Thursday.Team-mates Drew Lock, Brett Rypien and Blake Bortles are now in isolation after all being deemed "high-risk" close contacts.Hinton, 23, previously played quarterback in college.An undrafted player who has been on the team's practice squad since last month, he made his NFL debut on less than a day's notice and made 1-for-9 in passing for 13 yards as well as two interceptions."I can easily