Ryan Walters
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.
Ryan Walters
Followed Jeff Brohm. Ryan Walters held Purdue at Regional Program I for 2 seasons.
Career arc
His real stature score, season by season, across every program he’s coached — so a stretch that stays in one tier the whole way can still climb or sink on the line, not just flatten out. Node color marks the tier reached. Which program a stretch belongs to is carried by the shaded lane behind it.
Reached Regional Program in his 1st career season — faster than 20% of the 925 FBS coaches who have ever reached Regional Program (rank #1 of 925 by seasons-to-arrival).
Style position and drift
Where each stint’s offense sat between run-first and pass-first, and how far it moved from one season to the next. The band is that stint’s real season-to-season range, not a fixed-width box.
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.
His own effect, isolated
A statistical estimate of this coach’s contribution to team performance, separated from that season’s roster talent, returning production, and his coordinators — pooled across his whole head-coaching career.
Model fit as of 2026-09-04.
Coaching career
18th-best Purdue tenure of 21 by the numbers.
Underperforms his recruiting talent, on both sides of the ball.
Followed Jeff Brohm (2017–2022) · succeeded by Barry Odom (2025–2026).
| Season | 2023 | 2024 | Trend |
|---|---|---|---|
| Record & result | |||
| Record | 4–8 | 1–11 | |
| Postseason | — | — | |
| Recruiting rank | #68 | #29 | |
| Style — pass rate | |||
| Pass rate | 45.9 | 48.7 | |
| 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 (2021+ only) | |||
| 1st-down pass% | 43.5 | 40.9 | |
| Red-zone pass% | 30.6 | 61.1 | |
| 4th-down go%opp. territory | 33.3 | 37.5 | |
A typical amount of portal roster-building.
Brings in bigger-than-position-typical players than most.
Recruits older, more experienced transfers than most.
8 NFL Draft picks: Charlie Jones (2023), Aidan O'Connell (2023), Payne Durham (2023), Cory Trice (2023), Jalen Graham (2023), Tyrone Tracy Jr. (2024), Sanoussi Kane (2024), Marcus Mbow (2025)