7:25pm: Harbaugh said (via ESPN’s Jamison Hensley) he was uncertain about Madubuike’s outlook beyond Week 4 prior to today’s IR move. An absence spanning longer than four games is certainly possible given Saturday’s development, and clarity in this case will be worth watching for once it becomes available.
4:12pm: It’s doubly bad news for an already struggling defense. In addition to the semi-expected placement of Ravens defensive tackle Nnamdi Madubuike on injured reserve, Madubuike’s draft classmate Broderick Washington is joining him there. Baltimore will now face a four-game stretch that includes the Chiefs, Texans, Rams, and Bears without two key pieces on their defensive line. 
The Madubuike move was semi-expected after head coach John Harbaugh expressed some concern about the two-time Pro Bowler’s long-term availability in a media session yesterday. Now, those concerns have been realized as the veteran lineman will embark on an extended absence with the aim to heal his troubling neck injury. His presence was greatly missed on Monday as the Ravens went sackless for the first time in 57 games without their 2023 team sack-leader.
Things won’t get much better with Washington joining Madubuike on IR because of an ankle injury. The Texas Tech product has not been nearly as productive as his A&M counterpart, Madubuike, but Washington has established himself as a dependable depth piece for Baltimore over six years with the team. Out of a possible 87 career games, Washington has started 22 of 73 game appearances and is usually good for a sack or two per year.
To make matters worse, another starting defensive tackle, Travis Jones, is currently listed as questionable for tomorrow’s trip to Kansas City with an ankle injury, per Jeff Zrebiec of The Athletic. Playing on the final year of his rookie deal, this could be a big opportunity for Jones to gain some bargaining power for the offseason, but he’ll need to be on the field to make that a reality.
With Madubuike and Washington definitely out and Jones questionable, the Ravens are bringing up three defensive linemen for tomorrow’s game. Veteran lineman Brent Urban will be promoted to the 53-man roster after a short stay on the team’s practice squad. Recent practice squad signee Josh Tupou and C.J. Okoye will join Urban on Sunday, but as standard gameday practice squad elevations, they will revert back to the practice squad after the game.
That still leaves one open slot on the 53-man roster, and the Ravens will utilize it to promote practice squad tight end Zaire Mitchell-Paden. This may be additional bad news as there was hope yesterday that Isaiah Likely would be ready to make his 2025 debut tomorrow. This doesn’t necessarily indicate that Likely won’t be available, but it could hint at Baltimore’s confidence in his likelihood to play.