Research
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How to read this page
Team tables split by side of the ball, and the Side control hides the half you are not reading. What a team allowed is what its opponents gained, so the allowed tables are the offensive ones read from the other end. The roster is everyone who recorded a stat line, because the source holds no roster of its own — a player who never got on the field is absent. A dash means no number for that cell, or a zero in a roster column that counts.
Marvin Duffey Jr
RB2025 · Regular Season
For contextMarvin Duffey Jr ranks 939th of 1053 ncaaf rbs in total points added, at -4.9.
94th beats 94% of the NCAAF RBs; 1 is the best of however many the row says. Higher is always better, whichever way the stat runs. Red to green by where the placing sits. A stat with no better end is left unpainted.
Cardsall 5 shown▶
Playing Timevs NCAAF RBs▶
EfficiencyOffensevs NCAAF RBs▶
RushingOffensevs NCAAF RBs▶
ReceivingOffensevs NCAAF RBs▶
Ball SecurityOffensevs NCAAF RBs▶
Game log5 games
| Date | Opp | CAR | RUSH YDS | RUSH TD | LONG RUN | REC | REC YDS | REC TD | FUM |
|---|---|---|---|---|---|---|---|---|---|
| Nov 8, 2025 | @ MRST | 7 | 23 | 0 | 8 | — | — | — | 0 |
| Oct 25, 2025 |  STMN | 2 | 6 | 0 | 5 | — | — | — | 0 |
| Sep 20, 2025 |  HARV | 9 | 16 | 0 | 5 | — | — | — | 0 |
| Sep 13, 2025 | @ UTC | 3 | -1 | 0 | 2 | 2 | 18 | 0 | 0 |
| Sep 6, 2025 | — | 11 | 44 | 2 | 9 | — | — | — | 0 |
| Season | GP | CAR | RUSH YDS | YDS/CAR | RUSH TD | LONG RUN | REC | REC YDS | REC TD |
|---|---|---|---|---|---|---|---|---|---|
| 2026 | 3 | 1 | 5 | 5.0 | 0 | 5 | — | — | — |
| 2025 | 5 | 32 | 88 | 2.8 | 2 | 9 | 2 | 18 | 0 |
About College Football Research
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Every number the site holds for a college football team and the players who played for it, in one place. Pick a team, a season and a set of games, and read it. Nothing here needs an account.
Where the numbers come from
The same tables the boards read, resolved through one shared definition per stat. A rate is computed over the whole window rather than averaged across games, so a season figure is not the mean of the nightly ones.