Broncos fire offensive coordinator; quarterbacks coach to take over.

ENGLEWOOD, Colo. — Vance Joseph’s switch of quarterbacks did nothing to stem the tide of turnovers, so the Denver Broncos rookie head coach on Monday changed his offensive architect.

The Broncos’ first-year head coach fired coordinator Mike McCoy, his first hire when he got the job in January, and replaced him with quarterbacks coach Bill Musgrave for the final six weeks of the season.

“I want to have a more efficient pass game,” said Joseph, who also promoted Klint Kubiak to take over Musgrave’s old duties working with the quarterbacks.

Musgrave, who was John Elway’s backup quarterback in Denver in the late 1990s, is a 20-year coaching veteran with nine NFL seasons as an offensive coordinator with the Vikings, Jaguars, Panthers, Eagles and most recently, the Raiders in 2015 and ’16.

Joseph wouldn’t commit to keeping Brock Osweiler as his starting quarterback, saying he’d huddle with Musgrave and the rest of his offensive staff to “figure out who’s the best guy for our football team.”

The Broncos (3-7) have lost six straight, three under Osweiler, who has three TDs and four interceptions, and three under Siemian, who had nine TDs and 10 interceptions when he was benched.

These changes might also be a precursor to giving former first-round draft pick Paxton Lynch an audition.

AP FILE PHOTO The Denver Broncos have fired offensive coordinator Mike McCoy and are replacing him with quarterbacks coach Bill Musgrave. ‘I have a responsibility to do what’s best for our football team,’ coach Vance Joseph said in a statement ahead of his Monday...