Football
Misc
- Packages
- {cfbfastR} - API wrapper around https://collegefootballdata.com/. Beyond data aggregation and tidying ease, one of the multitude of services that cfbfastR provides is for benchmarking open-source expected points and win probability metrics.
- Resources
- CFBTrack College Football Glossary & Stats Dictionary
- CFBD Glossary
- PFF Signature Statistics Glossary
- cfbfastr vignettes has a series of articles on Expected Points
Metrics
- Misc
- Stats like “yards per rush” can be less informative based on how many games that include garbage time a team has.
- e.g. Georgia may be ranked lower in rushing yards per play than Ohio State but Ohio State’s numbers might be inflated because they played a weak schedule and blew out more teams than Georgia.
- Clavio doesn’t like PFF grades for TEs and WRs as he feels they don’t capture enough to be informative.
- FEI ratings are normally distributed, and one standard deviation is approximately 0.6 on the FEI rating scale, calibrated to equate to a scoring advantage or disadvantage on a neutral field of 0.6 points per possession. (source)
- In terms of the FEI ranking scale (end-of-season FEI), and now with nearly 140 FBS teams: (source)
- Average Team - Ranks in the mid-60s
- Good Team - Ranks in the mid-20s (one standard deviation better than the avg team)
- Elite Team - Ranks around 5th (two standard deviations better than the avg team)
- National Champions - Sometimes push into three-sigma (three standard deviations above average) territory.
- Luck metrics can be useful in win total prediction
- Example: 2025 Houston (9-3) (source)
- Easiest schedule in the Big 12 (ranked 73rd at the end of the regular season)
- +12 swing year over year in turnover margin (though they didn’t do nearly enough with those takeaways)
- Successful play and explosive play rates profiled almost exactly the same as NC State — a team that won 7 regular-season games
- 6-1 in one-possession games, 4-1 in games decided by a field goal or less, and won 5 games when tied or behind in the fourth quarter
- Therefore, the luck metrics indicate a lower win total than the 9 in 2025. With the o/u at 8.5 for 2026, the under might be a good bet.
- Example: 2025 Houston (9-3) (source)
- Stats like “yards per rush” can be less informative based on how many games that include garbage time a team has.
- Individual
- Career Snaps - The number of plays participated in
- Team
- Average Starting Field Position (e.g. Own 25.5)
- Conversion
- Late Down
- Efficiency (EF)
- Pass Blocking Efficiency (PBE) - The number of pressures allowed per pass protection snap with sacks weighted more heavily
- Tackling Efficiency - The number of tackles per “would-be sure” tackling opportunity
- Eckel Rate - How often your offense [defense] generates [allows] a big play touchdown or a first down inside the 40 on any given drive.
- These are definitions from a twitter post by Fleming.
- Eckel Ratio - The percent of total first downs and big play touchdowns in a game that you control
- EP (Expected Points) - Assigns point values to field positions based on down, distance, and yard line. A negative value means the opponent is expected to score next.
- EPA (Expected Points Added) -Uses EP to measure play impact by calculating the change in EP from the start to end of a play
- per Play or Dropback
- per Rush
- Early Downs
- Explosive Play Rate
- Garbage Time - When one of the following is true:
- Lead > 38 points in 2nd quarter
- Lead > 28 points in 3rd quarter
- Lead > 22 points in 4th quarter
- Line Yards
- per Rush
- Points
- per Play
- per Drive
- per Scoring Opportunity
- per Eckel - What an offense [defense] does [allows] given that you [your opponent] has a big play touchdown or a first down inside the 40
- PPA - Predicted Points Added; The net point value that a player relative to the down and field position
- Equivalent to EPA but uses CollegeFootballData.com’s custom model (what that model is… ¯\_(ツ)_/¯)
- Success Rate is:
- 1st Down: Gain \(40\%\) of yards to go.
- 2nd Down: Gain \(60\%\) of yards to go.
- 3rd/4th Down: Gain \(100\%\) of yards to go (convert).
- Standard Downs : First downs, second-and-7 or less and third- or fourth-and-4 or less
- Categories: Passing, Rushing, Early-Down, 3rd Down, etc.
- per EPA (e.g. Early Down Success / EPA)
- Yards
- per Point
- Luck
- Points off Turnover Margin (and YoY change)
- Fumble Recovery Rate
- Red-Zone Production
- Third-and-Short Production
- Avg Starting Field Position
- Close Game Record
- Offense
- Offensive Line
- HIT - Hits on the QB
- QBH - Hurries where a QB is forced to throw early or scramble
- OPP - Opportunities (aka snaps, reps)
- PEN - Penalties
- PR - Pressures Allowed which is sacks + hits + hurries
- SK - Sacks Allowed
- Receiving
- 1st - Number of First Downs
- ADOT - Average Depth of Target
- CTT - Contested Targets
- CCR - Contested Catch Rate
- DRP - Drop Rate
- MTF - Missed Tackles Forced
- Offensive Line
- Defense
- Havoc Rate - Percentage of plays that result in a disruptive negative event. It includes: tackles for loss (TFL), sacks, forced fumbles, interceptions, and pass break ups (PBU).
- ST (Solo Tackles), AT (Assisted Tackles)
- MT% - Missed Tackle Percentage
- R% - Reception Percentage; receptions per target
- YPR - Yards per Reception
- PBU - Pass Break-Ups
- FF - Forced Fumbles