UCLAQBCommitted

Ty Dieffenbach

Position coach (UCLA, 2026): Jon Boyer

Calabasas, CASenior6'6"227 lb#14

Report incorrect data

Estimated NIL value

$428K

Model estimate. This is not a reported contract.

Transfer Vulnerability Score

2 / 100

4th

Low risk. Percentile vs all active college players we track.

HS recruit

Class

Senior

Seasons left (incl. 2026)

2 seasons

Portal entry

January 10, 2026

Ty Dieffenbach is a 6'6", 227-lb Senior Quarterback from Calabasas, CA. Ty Dieffenbach entered the transfer portal from Cal Poly on January 10, 2026 and committed to UCLA. TransferPortl estimates Ty Dieffenbach's NIL market value at $428K, a model estimate rather than a reported contract. Ty Dieffenbach has a TransferPortl Transfer Vulnerability Score of 2 out of 100, a relative risk score for entering the transfer portal.

Updated Nov 9, 2026

Make Your Pick

No predictions yet for Ty Dieffenbach. The crowd pick shows after 5 more.

Only people on the TransferPortl email list can predict. We show totals, never names or emails.

Transfer Details

Cal PolyTO

UCLA

Advanced Statistics

2026 · 116 att

AY/A

8.76

85th

aDOT

9.5 yds

69th

EPA / Pass Play

0.32

76th

Percentiles rank this season against every 2026 FBS and FCS QBs with the same minimum sample. Higher is better.

AY/A uses passing yards, touchdowns, interceptions, and attempts. aDOT uses CFBD air-yard data. Both update with the weekly data build.

TVS History

Current TVS

Highest TVS

Nov 1, 2026

Each step is a saved weekly score; dots mark where the score changed. Hover to read any saved score. Model signals include recruiting profile, production and usage, team transfer rate, coaching changes, position, and prior transfer history. TVS is a relative risk score. It is not a literal probability.

Before past portal windows

Window	Team	TVS	Outcome
2026	Cal Poly	19 Moderate	Entered portal
2025	Pittsburgh	47 High	Entered portal
2024	Pittsburgh	22 Moderate	Did not enter

Each score comes from a model trained only on seasons before that roster year, so it shows what TVS would have said at the time.

Market Value History

Current market value

$427,549

Highest market value

$427,549

Nov 9, 2026

Each step is a saved TransferPortl estimate; dots mark where the estimate changed. Hover to read any saved estimate. Team logos mark recorded team changes. Historical points use point-in-time cumulative statistics and do not use later-season production.

Transfer History

Original School

Cal Poly

January 10, 2026

Cal Poly → UCLA

Committed

Recruitment

Class of 2023

Committed to UNLV Jun 2022 -> flipped to Pittsburgh Dec 2022

Season Statistics