Packers short at safety without Morgan Burnett, Sean Richardson

GREEN BAY, Wis. -- This is not what the Green Bay Packers wanted when facing the Kansas City Chiefs and running back Jamaal Charles on a potentially sloppy track at rainy Lambeau Field, as two of their top run-stopping defensive backs won't play on Monday night.

A day after Morgan Burnett was ruled out because of a calf injury, another safety, Sean Richardson, was declared inactive because of an ankle injury.

Micah Hyde will start in Burnett's place for the second time in three games. Burnett also missed the season opener against the Bears with the same injury. Defensive coordinator Dom Capers had been using Richardson as a sub in a base 3-4 package that featured three safeties in obvious run situations.

Without Burnett in Week 1, Chicago's Matt Forte rushed for 141 yards. With him last week against Seattle, Marshawn Lynch had just 41.

Lacy, Adams watch: According to ESPN Monday Night Football sideline reporter Lisa Salters, running back Eddie Lacy did not practice Sunday despite being upgraded from questionable to probable because of his right ankle injury. Salters reported that Lacy wanted to rest it as much as possible before the game. Davante Adams, however, was believed to have been at least a limited participant despite his left ankle injury. Like Lacy, Adams was upgraded to probable Sunday.

Rookie watch: Two undrafted rookies, cornerback LaDarius Gunter and running back Alonzo Harris, were on the 46-man active roster for the first time. Both were healthy scratches the first two weeks. In addition to Burnett and Richardson, the other inactives were: QB Brett Hundley, CB Demetri Goodson, G Lane Taylor, T Bryan Bulaga, TE Kennard Backman.

Weather report: A light rain began to fall around Green Bay about two-and-a-half hours before kickoff. It's expected to taper off early in the game.