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

McKnight (Achilles) will not play in Monday's game against the Patriots. McKnight surprised with two touchdowns in Week 3, but any momentum he had was stomped out by the ruptured Achilles he suffered Thursday. It's not clear how long McKnight will be out beyond Week 4, but he is likely facing an extended absence, depending on the severity of his setback.

McKnight suffered a ruptured Achilles' at practice Thursday, BJ Kissel of kcchiefs.com reports. McKnight thus appears headed to IR, with the potential return of De'Anthony Thomas to the Chiefs' Week 4 backfield mix now a matter of added import.

McKnight (Achilles) was limited at practice Thursday, ESPN.com reports. McKnight recorded 64 receiving yards and two touchdowns in Week 3, but we wouldn't bank on too many games like that from him this season, especially with Jamaal Charles and De'Anthony Thomas candidates to suit up Monday against the Patriots.

McKnight caught six passes (seven targets) for 64 yards and scored twice in Sunday's win at Miami. McKnight wasn't even a lock to make the team a few weeks ago, but served as Alex Smith's go-to weapon in the passing game Sunday. Of course he only saw the field as much as he did because of Jamaal Charles' absence. Once Charles (ankle) returns to the lineup, expect McKnight to head back to the bench.

McKnight didn't see the field Sunday against the Titans. McKnight was thought to be a possible contributor in the return game, but those duties fell to Knile Davis and Cyrus Gray on kickoffs and Frankie Hammond on punts. With five running backs currently on the roster, McKnight is the most expendable of the group, and could eventually be released if the team needs to add depth elsewhere.

McKnight has made the Chiefs' roster as reserve running back, the Kansas City Star reports. McKnight will serve as depth for the Chiefs, who surprisingly decided to keep five running backs on the roster. While he will be buried on the offensive depth chart, he may receive a chance to help in the return game, something he was known for when he played with the Jets.

McKnight is battling for the third running back spot on the Chiefs with Cyrus Gray, the Chiefs' official site reports. McKnight has impressed the coaches in training camp after being signed to a reserve/future contract in the offseason. He appears to have surpassed both Charcandrick West and De'Anthony Thomas in the battle for the third spot, and Thursday's preseason finale will go a long way in determining who nabs the number three spot on the depth chart.

Chiefs placed RB Joe McKnight (knee) and CB Demarcus Van Dyke (hamstring) on active/PUP. McKnight is expected to be activated within the next couple weeks, but he'll start off on the wrong foot as he tries to secure a roster spot. The ex-Jet spent last year on the street. The speedy Van Dyke will need to get healthy as he looks for a special teams role.

Chiefs RB Joe McKnight underwent arthroscopic knee surgery following minicamp. If you didn't previously know ex-Jet McKnight was on the Chiefs' offseason roster, now you do. We suspect he'll open training camp on the active/PUP list, and be activated a week or two in. McKnight will be battling for a roster spot.