Trevor Siemian’s job was officially secured in the waning seconds of Denver’s preseason win against San Francisco late Saturday. His first touchdown pass was negated by a penalty, so he quickly lined back up, found Jordan Taylor on a go route and placed a 19-yard pass on Taylor’s back shoulder for another score — one that counted. As Taylor chest-bumped his fellow receivers, Siemian sprinted to the sideline and high-fived offensive coordinator Mike McCoy. Game over.