When the Buffalo Bills square off against the Kansas City Chiefs tomorrow afternoon, the visiting Chiefs will be without two starting defenders against a Bills offense that, likewise, is missing two key members.

Anthony Toribio, the team's starting nose tackle in the 3-4 defense installed by now head coach Romeo Crennel, has been ruled out with an ankle injury. The Chiefs list Dontari Poe, the player selected directly after Bills cornerback Stephon Gilmore in this past April's 2012 NFL Draft, as Toribio's backup. It remains to be seen how involved the nose tackle will be, however, given Buffalo's offensive propensity to spread the field.

Meanwhile, the Chiefs will also be without starting free safety Kendrick Lewis, who has also been ruled out with a shoulder injury. Lewis did not play last week, either, and was replaced in the starting lineup by veteran Abram Elam. That's a step in the right direction from Jon McGraw, whom the Bills repeatedly abused in last year's Week 1 blowout win.

Also ruled out for the Chiefs: wideout Devon Wylie and end Allen Bailey. Two cornerbacks, Brandon Flowers and Jalil Brown, are listed as questionable. Flowers, the team's top corner, is expected to play.