ENGLEWOOD, Colo. (AP) The Denver Broncos bolstered their defensive backfield Monday by signing free agent safeties Shiloh Keo and Brandian Ross to one-year contracts.

Keo played in four regular-season games and two playoff games for the Broncos last season, helping solidify a secondary that was riddled by injuries down the stretch. His recovery on an onside kick sealed Denver's win over New England in the AFC championship.

Like Keo, Ross has spent four years in the NFL. He's started two dozen games with Oakland (2012-14), Miami (2014) and San Diego (2015) after spending a year on Green bay's practice squad.

More from FoxSports

The Broncos lost safeties David Bruton Jr. and Omar Bolden to free agency.

---

AP NFL website: www.pro32.ap.org and www.twitter.com/AP-NFL