Usage / Role
24%
Rotational offensive role
Player Dossier
2009-2012Penn State
RB • 5'9" • Harrisburg, PA, USA
Derek Day leans balanced backfield option traits and 38.7 efficiency.
Usage / Role
24%
Rotational offensive role
Impact Production
19
Developing production for a back
Reliability
19
Sporadic game-to-game production
Star Power
26
Limited ceiling signals so far
Career Arc
Value trend by season
Best season by Season Value: 2012 Regular Season · Penn State
Snapshot
Derek Day, RB. Best season Best season by Season Value: 2012 Regular Season · Penn State. Derek Day leans balanced backfield option traits and 38.7 efficiency.
Stat Footprint
Quick Answers
Season Ledger
| Season | Team | Games | Scrimmage | Rush Yds | Rec Yds | TD | Overall |
|---|---|---|---|---|---|---|---|
| 2009 Regular Season | Penn State | 0 | 0 | 0 | 0 | 0 | - |
| 2010 Regular Season | Penn State | 0 | 0 | 0 | 0 | 0 | - |
| 2011 Regular Season | Penn State | 3 | 40 | 27 | 13 | 0 | 45.9 |
| 2012 Regular Season | Penn State | 4 | 129 | 109 | 20 | 0 | 59 |
Related Context
Derek Day played RB for Penn State. Across 4 tracked seasons, Derek Day recorded 136 rushing yards and 33 receiving yards. His top tracked season came in 2012 with Penn State.
Lead takeaway
Best season by value score: 2012 Regular Season
Penn State paired 129 primary output with 38.7 efficiency.
Supporting note
2012 Regular Season role shape
backfield-heavy usage with 38.7 efficiency.
Supporting note
Career value is trending up
2012 Regular Season improved on the prior stop by season value score.
Supporting note
Peak game by takeover score: Virginia
Loss with 64 yards from scrimmage and efficient touch value. It landed in the 100th percentile of the selected season.
Analysis workspace
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Games
4
Scrimmage Yards / G
32.3
Efficiency
38.7
Usage
14.7
Consistency
55.5
Best Game by takeover score
Virginia
Active game
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Follow how the selected stat changes from one game to the next. Spikes mark standout outings, while dips show quieter weeks.
Chronological game order.
Game by game trend chart. Ohio: 39. Virginia: 64. Illinois: 14. Iowa: 12
Each dot is a game. Farther right means the player carried more of the workload, and higher means they were more efficient with those chances.
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Volume on the x-axis, quality on the y-axis.
Volume versus efficiency scatter chart. Ohio: 9 by 46.2. Virginia: 19 by 30.4. Illinois: 4 by 36.5. Iowa: 3 by 41.7
Compare how this player performed across different situations. "Games" shows how many matchups are included in each split.
Dense stat lines with inline explanations and season-linked highlights.
4 games
Featured metric
Scrimmage Yards
Top game by takeover score
Virginia
Best efficiency game
46.2 vs Ohio
Track team changes, role shifts, and season-to-season movement.
Penn State
2009-2012
Opening stop
Season Value Progression
| Season | Team | Primary | Efficiency | Usage | Delta |
|---|---|---|---|---|---|
| 2009 Regular Season | Penn State | 0 | — | — | — |
| 2010 Regular Season | Penn State | 0 | — | — | 0 |
| 2011 Regular Season | Penn State | 40 | 59.4 | 4.9 | 40 |
| 2012 Regular Season | Penn State | 129 | 38.7 | 14.7 | 89 |
#1 Featured game
@ Virginia
Week 2 · L 16-17
Loss with 64 yards from scrimmage and efficient touch value.
64
Scrimmage Yards
72.6 takeover
64 scrimmage yards and 30.6 usage.
#2
@ Indiana
Week 5 · W 16-10 · Conference game
13
Scrimmage Yards
58.8 takeover
Win with 13 yards from scrimmage and efficient touch value.
13 scrimmage yards and 1.5 usage.
#3
vs Eastern Michigan
Week 4 · W 34-6
18
Scrimmage Yards
56.9 takeover
Win with 18 yards from scrimmage and efficient touch value.
18 scrimmage yards and 8.3 usage.
#4
vs Ohio
Week 1 · L 14-24
39
Scrimmage Yards
53.2 takeover
Loss with 39 yards from scrimmage and efficient touch value.
39 scrimmage yards and 18.4 usage.
#5
vs Indiana State
Week 1 · W 41-7
9
Scrimmage Yards
31.9 takeover
Win with 9 yards from scrimmage and efficient touch value.
9 scrimmage yards and 5 usage.
#1 Season by Season Value
2012 Regular Season · Penn State
129 primary output · 38.7 efficiency · 14.7 usage
59
#2
2011 Regular Season · Penn State
45.9
40 primary · 59.4 efficiency · 4.9 usage
#3
2009 Regular Season · Penn State
—
0 primary · — efficiency · — usage
0
100+ rush yards
0
150+ scrimmage yards
0
2+ TD games
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