The Denver Broncos have added 15 undrafted free agents to their roster, including Missouri pass rusher Johnny Walker Jr. Notably, Walker had an impressive college season with 9.5 sacks and three forced fumbles. The transition from a 4-3 defensive end to a 3-4 outside linebacker will be crucial as the Broncos adapt to defensive coordinator Vance Joseph's scheme. Walker will compete for a spot in a crowded linebacker room, facing tough competition from established players and a recent fourth-round pick.