Joe McKnight (Achilles) was placed on injured reserve Tuesday, Aaron Wilson of the Baltimore Sun reports.

McKnight (Achilles) was placed on injured reserve Tuesday, Aaron Wilson of the Baltimore Sun reports.

Analysis:

McKnight ruptured his Achilles in practice last week, so it was just a matter of time before he ended up on IR. The fourth-year back posted a career game in Week 3 with Jamaal Charles out with an ankle injury - catching six passes for 64 yards and two scores - after not playing at all in 2013. His loss makes the eventual return of De'Anthony Thomas (hamstring) more intriguing, though Charles and Knile Davis will continue to handle most of the work out of the backfield for Kansas City.