Football All-Americans

The State & Nation Football Performance Index (SNPI-FB) is an objective, context-weighted evaluation model designed to eliminate "helmet bias," voter fatigue, and small-school stat-padding across all collegiate divisions (FBS, FCS, D2, D3, and NAIA).

Because college football data availability splits between FBS (granular play-by-play and EPA data via APIs) and lower divisions (drive summaries and box-score feeds via Sidearm/Presto), the SNPI-FB operates on a dual-engine architecture: advanced efficiency metrics where play-by-play exists, and context-normalized per-play metrics for non-FBS divisions.

Master Architecture & Universal Filters

Final Player Rating = (Positional Production Score) × (Leverage Factor) × (Opponent SOS Multiplier)

1. The Garbage Time Discount (The Blowout Filter):

Production that occurs when the game outcome is statistically decided (lead of $\geq 28$ points in the second half, or win probability $\geq 99\%$) is discounted by 60%. This eliminates non-conference 4th-quarter stat-padding.

2. Opportunity Normalization (Per-Play Basis):

Counting volume (raw yards or total tackles) is normalized per dropback, per carry, per target, or per defensive snap to measure rate efficiency over sheer snap volume.

3. Opponent / Strength of Schedule Multiplier ($M_{\text{SOS}}$):

Scaled from $0.75$ to $1.30$, benchmarked against opponent defensive/offensive SP+ (FBS) or opponent win percentage, scoring defense, and national Top-25 matchups (FCS, D2, D3, NAIA).

4. Volume Floor:

Players must meet baseline usage thresholds to qualify:

• Quarterbacks: Minimum 150 pass attempts

• Running Backs: Minimum 100 rushing attempts

• Receivers / Tight Ends: Minimum 40 targets (or 30 receptions)

• Defenders: Minimum 50% of team defensive snaps

Positional Index Formulas

1. Quarterbacks (Total Dropback Value Index)

A complete quarterback evaluation balances passing efficiency, sack avoidance, down-and-distance conversion, and rushing contributions, while harshly penalizing turnovers.

• Key Variables:

  • $\text{ANY/A}$ (Adjusted Net Yards per Pass Attempt):

$$\text{ANY/A} = \frac{\text{Passing~Yards} + \left( 20 \times \text{Pass~TDs} \right) - \left( 45 \times \text{INTs} \right) - \text{Sack~Yards}}{\text{Attempts} + \text{Sacks}}$$

Widely recognized as the single strongest box-score predictor of passing efficiency.

• Sack Rate ($\text{Sack\%}$): Penalizes quarterbacks who hold the ball too long and take drive-killing losses.

• High-Leverage Third-Down Conversion Rate: $+ 0.15$ multiplier boost if third-and-medium/long conversion rate exceeds $45\%$.

2. Running Backs (Rushing Efficiency & Creation Index)

Raw rushing yards are heavily dependent on offensive line quality. The algorithm isolates individual creation, success rate, and multi-down utility.

• Key Variables:

  • $\text{YPC}$ (Yards Per Carry): Adjusted by removing the single longest run of the season to eliminate outlier-inflated averages.

  • Success Rate: Percentage of carries resulting in at least $50\%$ of needed yards on 1st down, $70\%$ on 2nd down, and $100\%$ on 3rd/4th down.

  • Scoring Share: Individual scrimmage touchdowns divided by total team touchdowns (rewards high-usage workhorses).

  • Ball Security Penalty: $- 2.5$ points per lost fumble.

3. Wide Receivers & Tight Ends (Target Efficiency & Explosiveness Index)

Separates high-volume target beneficiaries from receivers who consistently beat man coverage, convert first downs, and create explosive plays.

• Key Variables:

  • Yards per Target (YPT): $\frac{\text{Receiving~Yards}}{\text{Targets}}$ (measures play-to-play efficiency regardless of scheme).

  • 1st Down Rate: Percentage of catches that move the chains or score.

  • Target Share ($\text{Dominator~Rating}$): Percentage of the team's total passing yardage and passing touchdowns accounted for by the player.

  • Tight End Premium: $+ 1.15$ position multiplier for tight ends to account for in-line blocking requirements and lower overall target volume.

4. Offensive Line (Havoc Prevention & Push Metric)

Offensive line play cannot be measured by individual box scores; it is judged on unit protection and situational short-yardage push.

• Key Variables:

  • Sack Rate Allowed: Sacks surrendered per dropback opportunity (inverted: lower yield equals higher score).

  • Stuff Rate Resistance: Percentage of runs where running backs are stopped at or behind the line of scrimmage (lower is better).

  • Power Success Rate: Percentage of runs on 3rd or 4th down with 2 yards or less to go that result in a first down or touchdown.

5. Defensive Line & Edge Rushers (Havoc & Disruption Index)

Defensive line evaluation must avoid relying solely on unassisted sacks, rewarding consistent pocket collapse and run stops.

• Key Variables:

  • Per-100 Defensive Snaps ($P100$): Normalizes playmakers on low-possession offenses with those on fast-paced, high-possession teams.

  • Havoc Total: Sum of Sacks, Tackles for Loss (TFL), and Quarterback Hurries (QBH).

6. Linebackers (Two-Way Impact & Stop Share)

Linebackers must be credited for sideline-to-sideline tackling volume, tackle quality at or behind the line, and pass disruption in coverage.

• Key Variables:

  • Tackle Share: Individual total tackles divided by total team defensive tackles (identifies the defensive focal point).

  • Stop Rate: Tackles resulting in a failed play for the offense based on down and distance.

7. Defensive Backs (Coverage Suppression & Playmaking)

Defensive back awards often mistakenly reward corners with high tackle numbers (meaning they allow completions). The algorithm rewards target suppression and ball production.

• Key Variables:

  • Passes Defended (PD): $\text{Pass~Breakups~(PBU)} + \text{Interceptions~(INT)}$.

  • Opponent Passer Rating when Targeted: When charted (FBS/FCS), inverts passing efficiency allowed; for D2/D3/NAIA, uses team passing yards allowed per attempt and third-down stop rate as unit proxies.

8. Specialists (Field Position & Accuracy)

• Placekickers (K):

$$\text{K~Score} = \left( \text{FG\%} \times 1.0 \right) + \left( \text{50+~Yd~FGM} \times 2.0 \right) + \left( \text{40-49~Yd~FGM} \times 1.0 \right) - \left( \text{Missed~XP} \times 3.0 \right)$$

• Punters (P):

$$\text{P~Score} = \left( \text{Net~Punting~Avg} \times 1.5 \right) + \left( \text{In-20\%} \times 0.30 \right) - \left( \text{Touchback\%} \times 0.25 \right)$$

• Return Specialists (RS):

$$\text{RS~Score} = \left( \text{Kick~Return~Avg} \times 1.0 \right) + \left( \text{Punt~Return~Avg} \times 1.5 \right) + \left( \text{Return~TDs} \times 4.0 \right)$$

Tactical Roster Composition (26-Man All-America Squad)

Each First Team, Second Team, and Honorable Mention roster is published using an NFL/NCAA standard 26-player roster footprint: