Trevor Siemian will remain the starting quarterback as the Broncos prepare to face the Kansas City Chiefs next week, head coach Vance Joseph said on Monday. “Absolutely. He’s our quarterback,” Joseph said. “He can’t play well if he’s not being protected.” “He can play better, absolutely,” Joseph said. “But it’s not a Trevor problem, it’s a unit problem.” The news comes a day after Siemian and the Broncos offense failed to put up any points against the Los Angeles Chargers on Sunday. It was the Broncos first shut out in 25 years. Siemian and the Broncos have lost three of their past four games and have only managed to score 10 points in the last two games and have not scored over 20 since week two.