Ryan Walters
Now
Career arc
Coordinator years
Defensive coordinator across 3 programs, 4 stints, before and after wearing the head-coach hat — every season measured on the same axis, whether he personally ran the unit or someone else did.
How to read this. Coordinator seasons come from our coordinator career records; head-coaching-era seasons are the same unit's FBS-relative percentile for those years, regardless of who coached it, read directly from the staff assignments record. A role change (a “hinge”) is a fact, never a performance verdict — only the season-by-season data itself is colored by outcome.
Fans
No fan talk about him on our list yet. His record is on Career.
Stats
Big games
The big-game ledger
How he does in the games that matter most — rivalry record, performance broken out by real opponent tier, one-score games, and his toughest historical matchup.
1-1 against his rivals.
ATS is his record against the spread: did his team beat the closing betting line, winning by more than it or losing by less? Lines start in 2013; a dash means fewer than 6 of those games had one. One-score games carry no spread record: a big favorite that wins a close game has almost always failed to cover, so that number would say nothing about the coach.
Signature games
Tags describe each game; they aren’t scores. The weighting that picks these games is still being tested.
How he plays
Run/pass mix, by field position
Called about what the situation called for.
1,494 run and pass snaps at Purdue, 2023–2024, his own games, one row per offensive coordinator. Each cell is how much more often he passed than the rest of FBS did in the same situation (field zone, down, distance, score, quarter, same season), in percentage points.
Pass rate, stint by stint
Where each stint’s offense sat between run-first and pass-first, and how far it moved from one season to the next, against the FBS-wide average of 41% pass. The band is that stint’s real season-to-season range, not a fixed-width box.
Building the roster
Four numbers on how he actually stocks a roster, from signing day to draft day.
His recruiting, really
His one ranked Purdue class of his own finished #29 nationally.
His class — he had the full signing cycleTransition — he was hired mid-cycle
Rank is each signing class’s national recruiting rank (#1 is best). Only a class he had a full signing cycle to build counts as his; inherited and mid-transition classes still show here, faded, but stay out of the average.
Roster ownership
Roster ownership
of his 2024 roster arrived on his watch — 99 of 121 players. The other 22 are holdovers from before he was hired.
Of his own players on this roster, 24% came through the transfer portal; the rest are non-portal arrivals (high-school signees, JUCO transfers, walk-ons).
Everyone he has brought in, 2023–2024Counting players who have since left: 26% of the 114 arrivals we can classify came through the portal.
“His own” means the player arrived while he was head coach; “inherited” means a predecessor brought him in.
Where he recruits
is his biggest recruiting state: 11 of 46 signees (24%) across his 2023–2024 tenure, drawn from 15 states in all. Next: OH (7).
52% of his signees come from IN and its 4 border states (OH 7, IL 3, KY 2, MI 1).
Off this map: 3 signees to the west (CA, CO, others).
- median hometown distance
- 207 mi
- within 100 mi
- 34%
- within 500 mi
- 75%
- beyond 1,000 mi
- 8%
The map counts signed recruits across his tenure; the distance figures cover his current roster, transfers and walk-ons included. Two different groups, kept separate on purpose.
The NFL pipeline
The NFL pipeline
players drafted into the NFL off his teams here. None were his own recruits yet: all 3 roster-verified picks arrived under Jeff Brohm.
| Year | Pick | Player | Pos | NFL team | Note |
|---|---|---|---|---|---|
| 2025 | R5.18 | Marcus Mbow | Offensive Guard |  New York Giants | recruited under Jeff Brohm |
| 2024 | R5.31 | Tyrone Tracy Jr. | Running Back | New York Giants | recruited under Jeff Brohm |
| 2024 | R7.30 | Sanoussi Kane | Safety |  Baltimore Ravens | recruited under Jeff Brohm |
A pick counts toward his tenure when the player’s final college season was one he coached, a checkable rule rather than a claim about who developed the player. A blank note means the player is on a verified roster and arrived on his watch. “Estimated” means no roster record, so the final season is assumed to be the year before the draft.
News
No outlet on our list has written about him by name yet. His record is on Career.
Career
Coaching career
The arc of his career is on Now.
Steady no large move in either direction on our stature ladder
Followed Jeff Brohm (2017–2022) · succeeded by Barry Odom (2025–now).
| Season | 2023 | 2024 | Trend |
|---|---|---|---|
| Record & result | |||
| Record | 4-8 | 1-11 | |
| Postseason | — | — | |
| Coordinators | |||
| OC | Graham Harrell | Graham Harrell | |
| DC | Kevin Kane | Kevin Kane | |
| Outcome — opponent-adjusted efficiency percentile | |||
| Offense | 37 | 6 | |
| Defense | 45 | 1 | |
| Tendencies — play-by-play, neutral script | |||
| 1st-down pass% | 43.5 | 40.9 | |
| Red-zone pass% | 30.6 | 61.1 | |
| 4th-down go%opp. territory | 33.3 | 37.5 | |
Underperforms his recruiting talent, on both sides of the ball.
Typical size for position, once adjusted for position mix.
Recruits older, more experienced transfers than most.