PBUF#4ACT

Matt Darr

Height6'1"

Weight217 lb

BornJul 2, 1992

Age34

CollegeTennessee See College Stats

Rookie yr2015

Encyclopedia Coverage5/8 data layers

StatVault aggregates multiple open-licensed and proprietary sources into a single profile. The depth indicator above shows which layers are available for this player.

Bio & DraftBirth date, height/weight, draft round/pick, college — sourced from nflverse players.csv (CC-BY 4.0). Covers all NFL eras.

Season Stats (1999–present)Week-by-week box scores aggregated to season totals: passing, rushing, receiving, defense. Source: nflverse player_stats. Counting stats are exact; rates are derived.

Advanced (EPA, 1999–present)Not available for this player

Snap Counts (2012–present)Offensive, defensive, and special-teams snap counts with team-share percentages. Essential for OL and situational players. Source: nflverse snap_counts.

Fan Rating

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2015 Draft ClassmatesFull class →

Jameis Winston

Rd 1, #1

Marcus Mariota

Rd 1, #2

Dante Fowler Jr.

Rd 1, #3

Amari Cooper

Rd 1, #4

Brandon Scherff

Rd 1, #5

Compare Matt Darr vs Player Report data error

Defensive StatsNot available for this player

College StatsCollege attribution is present, but this profile artifact does not yet carry a parsed college stat table.

NFL Combine / Pro DayNot available for this player

Proprietary LayersKV-H (Knox Value-Historical) — era-normalized career rating 0–100 calibrated within position group (1999+ coverage). SIS (Snap Impact Score, 2012+) — per-snap production z-scored within position. VORP — value over replacement player. Durability IQ — games-played percentile adjusted for era.

Pre-1999 players have bio + draft data but counting stats are not available from any freely-licensed source. Players with ★ Career Only see verified career aggregates from nflverse draft_picks.

Understanding These Stats

Rushing

Att — Rushing attempts (carries).

Yds — Rushing yards.

TD — Rushing touchdowns.

Y/A — Yards per carry — rushing yards ÷ carries. The core rushing efficiency rate; 4.5+ is solid, 5+ is elite.

TD% — Touchdown rate per carry (TDs ÷ carries × 100) — measures scoring efficiency per touch independent of volume. Red-zone workhorses lead here.

1D — First downs gained on rushing plays.

1D% — First-down conversion rate (first downs ÷ carries × 100) — how often a carry moves the chains. Top RBs convert on 25%+ of attempts.

Fmb — Rushing fumbles lost — the key ball-security stat for running backs. Below 1 per season is elite.

Snap Counts (2012–present)

Off / Off% — Offensive snaps played and share of team total. The most reliable usage metric for skill positions and OL.

Def / Def% — Defensive snaps played and share of team total.

ST / ST% — Special-teams snaps played and share of team total.

Proprietary StatVault Metrics

KV-H (Knox Value-Historical) — Era-normalized career rating 0–100 within position group, calibrated so a 50 = average starter and 90+ = all-time great. Covers 1999–present. Built on a 5-year IQR/robust-std era window.

SIS (Snap Impact Score) — Per-snap production z-scored within position group and era (2012+). Measures how much a player produced per opportunity, not raw volume.

VORP (Value Over Replacement) — Sum of max(0, season KV-H − positional replacement level) across a career. Measures career value above the minimum-roster baseline at each position.

Durability IQ — 0–100 score reflecting how many games a player played relative to peers at the same position in the same era. Adjusts for injury-shortened seasons.

Postseason Career

1 playoff game

Snap Counts

ST6ST%26.0%

College Stats

TennesseeCollege listed; stat table pending import

College stats are not imported for this profile yet.

StatVault has the verified college attribution (Tennessee), but no parsed college box-score table is present in this profile artifact. The section stays here so every profile has a consistent college-stats landing point without fabricating unavailable rows.

Movementderived from season history

2018team change
Joined BUF (from MIA)
2018final season
Last recorded season with BUF
2015signing
Entered the NFL with MIA

Athletic & Unique Profile

verified measurements and curated source-tagged facts

6'1" / 217 lb

Frame

Knox

StatVault's proprietary player intelligence, informed by full career data. How Knox works →

Availability

Career durability — games played vs. scheduled, across 3 seasons.

77%

20152018

2018 · cause not documented · 31%

Durability IQ

Composite score across availability, IR frequency, and injury severity. See all →

Typical

Data: nflverse:players, nflverse:player_stats, nflverse:snap_counts · multi-source verified via the StatVault Oracle · updated 7/31/2026