The Denver Broncos believe linebacker Dre Greenlaw's latest injury isn't serious. Greenlaw pulled up while covering running back J.K.

Denver's first player to land on injured reserve this summer is undrafted outside linebacker Johnny Walker, who will go on season-ending IR with a lower body injury. To fill Walker's former spot on the active roster, the Broncos signed UFL pass rusher Garrett Nelson.

Head Coach Sean Payton said Friday that Denver expects rookie outside linebacker Que Robinson to return to the field on Monday, while linebacker Dre Greenlaw should also practice next week. Robinson has not practiced in recent days, and Payton said he is dealing with a bone bruise.