Ty Dieffenbach

Expected points added: how much the player’s plays moved the team’s expected score, per play and in total. Plays: total EPA divided by EPA per play, the plays the source credits to him (for a receiver roughly his catches and runs, not every target; for a passer, not every attempt), so it can differ from attempts plus carries. Percentile: against the position’s regulars that season across all divisions on file (quarterbacks with 150+ plays, backs 60+, receivers and tight ends 30+), with how many there were (n) and their median; a dash means too few plays to rank. A season in progress uses the full-season bar scaled by games played, never below 75 plays for quarterbacks, 30 for backs and 20 for receivers. The cohort grows or shrinks with the source’s coverage each season (2025 lists far more players), so compare percentiles rather than raw EPA across years. FCS seasons are marked. Usage: the share of the team’s plays the player was part of (shown from 20 plays). From CollegeFootballData, 2013 on.

Success: passes that kept the offense on schedule. Depth: how far downfield his passes traveled in the air, on average. After catch: yards his receivers gained after the catch, per completion. Deep throws: the play-by-play gives depth and direction for about half of a passer’s throws; this is how many of those went deep, and how many of the deep ones were caught. From CollegeFootballData, FBS games, 2025 on.

2026 UCLA 2 games, 307 passing yards, 1 TD

Date	Opponent	Result	Cmp	Att	Yds	TD	Int	Rush
Oct 10	atOregon	W 17–⁠15	3	6	43	1	0	−15
Oct 17	vs.Wisconsin	W 17–⁠7	22	33	264	0	1	−12

2025 Cal Poly 9 games, 1,305 passing yards, 9 TD

Date	Opponent	Result	Cmp	Att	Yds	TD	Int	Rush
Aug 30	atSan Diego	W 41–⁠17	18	27	263	2	0	69
Sep 6	atUtah	L 9–⁠63	6	9	82	0	1	−7
Sep 13	vs.WOWestern Oregon	W 56–⁠7	8	11	192	3	0	13
Sep 20	atStephen F. Austin	L 17–⁠35	1	2	42	0	0	14
Oct 11	atMontana	L 9–⁠28	15	33	225	1	4	13
Oct 25	vs.Montana State	L 17–⁠34	2	5	3	0	0	9
Nov 1	vs.Portland State	L 35–⁠40	14	23	207	1	1	64
Nov 8	atIdaho State	L 17–⁠27	18	29	172	1	1	142
Nov 15	atNorthern Arizona	L 27–⁠35	10	23	119	1	2	4

Box scores from CollegeFootballData, 2004 on. ✦ postseason; ★ a career high on file.