the yahngorithm
Idaho State
Big Sky · FCS
29
@
Utah State
Pac-12
17
Week 1 · 2026 · Final · CBSSN · Maverik Stadium
Market spreadUSU -15.5
Market total59
Model spreadUSU -11.7
Edge-3.8

Spread models

SP+efficiencymodel USU -11.7
market USU -15.5  ·  edge -3.8 (away)  ·  IDST -17.1 vs USU -7.9 + 2.5 HFA
SRSscoring margin
no games played yet — empty in week 1, noisy through ~week 3
YahnSP+ + EPA + rostermodel USU -12.7
market USU -15.5  ·  edge -2.8 (away)  ·  IDST -17.1 vs USU -7.5 + 3.1 HFA

The spread signal is SP+ only right now. Market is the consensus of 8 books. Positive edge = model likes Utah State. Guide §2.

How the Yahn number is built — not a separate model
SP+ base+ EPA+ roster= rating
IDST-17.10-17.1
USU-7.9+0.4-7.5

SP+ is the backbone. EPA nudges toward raw efficiency (weight grows through the season — near zero this early). Roster = talent + returning production + transfer-portal net, fading to zero by week 5. Venue home edge: 3.1 (2.7 base + altitude / hostile bump; SP+ and SRS use a flat 2.5). Weights un-calibrated.

Totals model

IDST expected
23.1
1.9 pts/poss
USU expected
34.8
2.9 pts/poss
Model total
57.8
market 59 · 24.4 poss, average pace
Edge
-1.2
under the 3.5-pt bar — noise

Only SP+ feeds this. Totals are noisier than spreads — the model's biggest UNDER edges cluster on blowouts and are mostly artifacts. Trust it most on games with a spread inside ~14. Guide §3.

Situational flags

No situational flags on this game.

Team trends · 2026 season to date

IDSTUSU
ATS overall1-01-1
ATS at home0-1
ATS on the road1-01-0
ATS as favorite0-1
ATS as underdog1-01-0
ATS after a win
ATS after a loss1-0
W–L at home0-1
W–L on the road1-00-1
Over / Under0O–1U0O–2U

Amber = an outlier split (≥65% or ≤35% ATS on 8+ games). Trends are context, not a signal on their own.

Current lines

BookSpread (USU)Total
betmgm-15 -11059.5 -105
betonlineag-15.5 -11558.5 -115
betrivers-16.5 -11259.5 -110
bovada-15.5 -11059 -105
draftkings-15.5 -10859.5 -112
fanduel-15.5 -11258.5 -112
lowvig-15.5 -11558.5 -115
mybookieag-15.5 -11059 -110

Best USU number -15 · best IDST number +16.5. Best over 58.5 · best under 59.5. Latest snapshot Sep 5, 6:00 PM. Odds shown where the source provides them (live pulls only). Spread is from USU's side.

Line movement

Showing the 5 most recent snapshots of 18.

Prediction market · Kalshi

IDST99%
USU1% 81.4
Implied lineIDST -31.4
Volume1757k
Open interest944k
Traded 24h1609k

Kalshi's market prices USU to win 1% — about IDST -31.4 vs the book's USU -15.5. 46.9-pt gap — the market rates IDST higher than the book. Volume and open interest are total contracts on the game (each settles at $1), not a per-side split — they tell you how much to trust the price. Guide §9.

Showing the 5 most recent of 12 snapshots.

Weather

Forecast for the venue at kickoff time (nearest hour). Each row is a snapshot — expect it to firm up as the game nears; the timestamp is when that snapshot was taken.

Showing the 3 most recent of 10 readings.

Sustained wind ≥ 15 mph is the one weather factor that reliably moves a total (UNDER). Everything else is minor. Guide §4.

Injuries

No impact-player injuries listed. ESPN's CFB feed is thin — an empty report means "unknown," not "clean." Guide §4.

Picks

No pick logged. Most model disagreements never become picks — see guide §6 for the bar.

Decision support, not a guarantee. Read the interpretation guide.