The Broncos are down a notable piece of their tight end room for at least the next month. Denver has officially placed TE Lucas Krull on injured reserve. Krull led last year’s Broncos tight ends with 19 catches. In his place, Denver signed ILB Garett Wallow from the practice squad to the 53-man roster, a source said. The move means the Broncos now carry an open spot on their practice squad.