The Zeitgeist List · coordinating

Walt Bell

Offensive coordinator across 5 programs, 6 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 coordinator_journeys(); head-coaching-era seasons are the same unit's FBS-relative percentile for those years, regardless of who coached it, read directly from staff_assignments. A role change (a “hinge”) is a fact, never a performance verdict — only the season-by-season data itself is colored by outcome.

The Zeitgeist List · coaching

Walt Bell

Followed Mark Whipple. Walt Bell held Massachusetts at Regional Program V for 3 seasons.

2–23

2019–2021 · 1 stint

Massachusetts

← all coaches

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).

Massachusetts, 3 seasons

−6.4

Regional Program V → Regional Program VI.

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.

Pass rate — share of offensive plays that were pass attemptsfirst covered seasonmost recent covered seasonfull season-to-season range (3+ covered seasons)

How much that is, against every other stint

Season-to-season pass-rate range for all 258 FBS coaching stints with at least three covered seasons, 2014–2025.

Typical stint7.010.2 median13.9middle half of all stints

Massachusetts3.4pt#241 of 258 · less than most

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.

One-score games

1–0

100.0% · margin ≤8

Performance by opponent class

National Program

0–3 0.0%

Regional Program

1–10 9.1%

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.

Offense marginal impact

-0.38

#275 of 319 · less than most

Defense marginal impact

-0.38

#311 of 325 · less than most

Model fit as of 2026-09-04.

Coaching career

2019–2021

Massachusettscaretaker

Regional Program V → Regional Program V

Walt Bell held Massachusetts at Regional Program V for 3 seasons.

3rd-best Massachusetts tenure of 7 by the numbers.

Recruiter or developer?

Underperforms his recruiting talent, on both sides of the ball.

Offense vs. talent

-28.5 pts

#198 of 208 · less than most

Defense vs. talent

-24.5 pts

#187 of 208 · less than most

Recruiting talent is team-wide (no offense/defense split exists in the source data) -- both sides are scored against the same talent input, only the outcome is side-specific.

Followed Mark Whipple (2014–2018) · succeeded by Don Brown (2022–2024).

Season	2019	2020	2021
Record & result
Record	1–11	0–4	0–3
Postseason	—	—	—
Recruiting rank	#112	#100	#116
Style — pass rate
Pass rate	47.7	46.1	44.3
Coordinators
OC	—	Angelo Mirando	—
DC	Aazaar Abdul-Rahim / Tommy Restivo	Tommy Restivo	Tommy Restivo
Outcome — opponent-adjusted efficiency percentile
Offense	2	1	13
Defense	0	30	2
Tendencies — play-by-play, neutral script (2021+ only)
1st-down pass%	45.1	47.4	44.7
Red-zone pass%	38.8	—	34.3
4th-down go%opp. territory	48.0	—	56.0

Roster construction · portal era

A typical amount of portal roster-building.

Portal arrivals

2.7★ avg rating

Portal departures

left via the portal

Net portal flow

-10

#112 of 187 FBS stints

Who they bring in

Brings in bigger-than-position-typical players than most.

A typical class-year mix of incoming transfers.

Avg. size (raw)

6′2″, 211 lbs

across 5 of 11 arrivals — unadjusted for position mix

Size vs. position-typical

+8.5 lbs

#26 of 255 · more than most

Avg. class year

#102 of 255 · a typical amount

Top states: GA (2), NJ (1), CA (1), MI (1)

Who won the portal our read

Talent added

22.9

position-weighted

Talent lost

41.3

position-weighted

Net

-18.4

arrivals minus departures

Best addition: Bryce Watts (CB) from North Carolina

Biggest loss: Will Koch (QB) to the portal

Position-value-weighted (QB/CB weighted highest, depth-decayed within each position) — the same scoring engine as the Portal Heat feed, not a separate grade.

Does the system survive a coordinator change?

DC: co-Aazaar Abdul-Rahim / co-Tommy Restivo → Tommy Restivo · 2020

1-season window either side — numbers shown, not enough to badge a verdict.

Roster size, by position

Skill positions · usage-weighted (real participation)

Quarterback

205 lbs

6′3″ avg · #592 of 767 · less than most

Running back

216 lbs

6′0″ avg · #106 of 791 · more than most

Wide receiver

190 lbs

6′0″ avg · #540 of 791 · a typical amount

Tight end

244 lbs

6′5″ avg · #427 of 731 · a typical amount

Trench & secondary · recruited roster, not confirmed starters

Interior line

313 lbs

6′4″ avg · #218 of 779 · a typical amount

D-line

288 lbs

6′2″ avg · #301 of 753 · a typical amount

Cornerback

190 lbs

6′0″ avg · #379 of 771 · a typical amount

Offensive-line size is one undifferentiated bucket — the source data almost never distinguishes tackle from guard from center, so we can't split them out.

Where the roster comes from, by position

Buys ATH via the portal

17%

#30 of 146 stints

Grows Safety from high school

80%

#177 of 218 stints

Grows Edge from high school

100%

#191 of 208 stints

3 NFL Draft picks: Andy Isabella (2019), Isaiah Rodgers (2020), Larnel Coleman (2021)

2–23