ENGLEWOOD, Colo. — Knowshon is a no-show.

The Denver Broncos' two first-round draft picks, Knowshon Moreno and Robert Ayers, remain unsigned early Friday and missed the official start of training camp.

They're the first rookie holdouts in Denver since running back Tatem Bell showed up late in 2004.

Moreno, a running back from Georgia, was the 12th overall pick in the draft, and Ayers, a pass-rusher from Tennessee, was the 18th selection.

The Broncos, under new coach Josh McDaniels, kicked off training camp Friday. Players were required to report Thursday for physicals and conditioning tests and had meetings and a workout on the field.