When the Kansas City Chiefs cut an injured player who is not vested (less than four years of service), the player is technically waived / injured and hits the waiver wire. Assuming the player passes through waivers (they almost always do), that player reverts to injured reserve and the Chiefs hang onto his rights.
Last week, Junior Hemingway was waived / injured, which meant once he cleared waivers he reverted to the Chiefs injured reserve. According to the NFL's transactions list, the Chiefs released Hemingway from IR on Tuesday so he's officially off the team.
The Chiefs also waived / injured LB Josh Martin last week. Martin passed waivers and now hits IR for the Chiefs. Martin had a concussion during the preseason which is severe enough to cost him at least six weeks of time or more. Concussions are scary as hell so let's hope all is well with Martin. The Chiefs have two-plus years invested in Martin so he's worth keeping around.
The Chiefs also made a roster move on the practice squad by releasing CB Deji Olatoye and signing CB Jeremy Harris, who was most recently with the Jacksonville Jaguars. If you've been paying attention then this will be confusing to you because when the Chiefs announced their practice squad two days ago, Olatoye was not on it but Harris was. Apparently Olatoye was on the practice squad at one point but now Harris is. So there's that.