Efficiency & Role
EPA = expected points added per play. Compared with every FBS QB who qualifies
Advanced
Computed from every play, garbage time excluded. FBS rank among players with enough volume
| Passing | Value | FBS rank |
|---|---|---|
| Dropbacks | 41 | — |
| Success rate | 46.3% | 44th / 170 |
| Explosive pass rate | 17.9% | 6th / 170 |
| Deep-throw rate | 15.4% | 46th / 170 |
| Sack rate | 4.9% | 91st / 170 |
| Interception rate | 2.6% | — |
| 3rd-down conversion | 62.5% | 4th / 170 |
| Rushing | Value | FBS rank |
|---|---|---|
| Carries | 8 | — |
| Success rate | 25.0% | — |
| Explosive run rate | 0.0% | — |
| Stuffed at the line | 25.0% | — |
| First downs | 1 | — |
| Red-zone carries | 2 | — |
| Goal-line carries | 2 | — |
Charting
Where Dieffenbach's plays went: throw and catch spots, air yards and yards after the catch, read from the play-by-play
Where he throws37 throws charted
Game Log
Ty Dieffenbach's box score, game by game, from ESPN, with a 0–10 game score for each (hover it for how it works). Click a result for the full game
| Passing | Rushing | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wk | Opponent | Result | Game score | Cmp | Att | Pct | Yds | Y/A | TD | INT | Car | Yds | Y/C | TD | Long |
| 1 | @ California | W 45–24 | — | no stats recorded | |||||||||||
| 2 |  San Diego State | W 28–10 | — | no stats recorded | |||||||||||
| 3 |  Purdue | W 52–38 | — | no stats recorded | |||||||||||
| 4 | @ Maryland | W 54–3 | — | no stats recorded | |||||||||||
| 6 | @ Oregon | W 17–15 | — | 3 | 6 | 50.0 | 43 | 7.2 | 1 | 0 | 4 | -15 | -3.8 | 0 | 6 |
| 7 |  Wisconsin | W 17–7 | 5.5 | 22 | 33 | 66.7 | 264 | 8.0 | 0 | 1 | 6 | -12 | -2.0 | 0 | 3 |
| 2026 · 2 games | 5.5 | 25 | 39 | 64.1 | 307 | 7.9 | 1 | 1 | 10 | -27 | -2.7 | 0 | 6 | ||
2026 Season Stats
FBS rank among qualifying players
| Passing | 2026 | FBS rank |
|---|---|---|
| Completions | 25 | — |
| Attempts | 39 | — |
| Completion % | 64.1% | — |
| Yards | 307 | 171st / 265 |
| Yards / att. | 7.9 | — |
| Touchdowns | 1 | 191st / 265 |
| Interceptions | 1 | — |
| Rushing | 2026 | FBS rank |
|---|---|---|
| Carries | 10 | — |
| Yards | -27 | 1440th / 1456 |
| Yards / carry | -2.7 | — |
| Touchdowns | 0 | — |
| Long | 6 | — |
Snaps by Game
Estimated snaps: every offensive play credited to the QB running the offense. Close to a true snap count
| Game | Team plays | Est. snaps | Plays involved | Penalties | Snap share |
|---|---|---|---|---|---|
| Wk 6 · Oregon | 70 | 28 | 10 | 1 | 40% |
| Wk 7 · Wisconsin | 71 | 68 | 39 | · | 96% |
| Season | 404 | 96 | 49 | 1 | 24% |
Position Room
5 QBs on the UCLA roster, ordered by att
| # | Player | Pos | Class | Att | Yds | TD | INT | EPA/play |
|---|---|---|---|---|---|---|---|---|
| 9 | Nico Iamaleava | QB | SR | 116 | 982 | 4 | 4 | +0.06 |
| 14 | Ty Dieffenbach | QB | SR | 39 | 307 | 1 | 1 | +0.16 |
| 10 | Madden Iamaleava | QB | SO | 1 | 0 | 0 | 0 | -0.43 |
| 17 | Colton Gumino | QB | SO | — | — | — | — | — |
| 18 | DJ Bordeaux | QB | FR | — | — | — | — | — |
Stats, EPA and usage come from CollegeFootballData.com and refresh daily. FBS ranks only count players with enough volume for the stat to mean something. Qualifying for EPA takes 12+ plays per team game. UCLA depth chart →