load_cfb_fpi_weekly: *Load college football weekly ESPN FPI ratings from the...
In cfbfastR: Access College Football Play by Play Data

load_cfb_fpi_weekly

R Documentation

Load college football weekly ESPN FPI ratings from the SportsDataverse data repo

Description

Loads weekly ESPN FPI snapshots – one row per team-week with FPI and its components as published that week. Published to the cfb_fpi_weekly release tag on the sportsdataverse-data repo.

Usage

load_cfb_fpi_weekly(
  seasons = most_recent_cfb_season(),
  ...,
  dbConnection = NULL,
  tablename = NULL
)

Arguments

`seasons`	A vector of 4-digit years associated with given college football seasons. Published coverage runs 2005 through the most recent season. Pass `seasons = TRUE` for every published season. (Min: 2005)
`...`	Additional arguments passed to an underlying function that writes the season data into a database.
`dbConnection`	A `DBIConnection` object, as returned by `DBI::dbConnect()`
`tablename`	The name of the data table within the database

Value

Returns a cfbfastR_data tibble.

col_name	types	description
season	integer
season_type	integer
week	integer
team_id	integer
last_updated	character
run_date_time_key	integer	ESPN's run key for the snapshot, as an integer timestamp (e.g. 20241021040000). This is the AS-OF date the snapshot represents, which is not the same as last_updated (when ESPN computed it); the gap between the two is what snapshot_is_contemporaneous flags.
snapshot_out_of_sequence	logical	True when this snapshot was computed AFTER one belonging to a later week of the same season type -- so it cannot be read as an as-of-that-week rating. Almost always the week-1 slot, which ESPN overwrites with a late-season computation (2024 week 1 is stamped 2024-12-15). Filter these out for any point-in-time or backtest use.
fpi	double	Football Power Index that measures team's true strength on net points scale; expected point margin vs average opponent on neutral field.
fpirank	double	ESPN's FPI rank field. Agrees with rank on 99.4% of rows; on the ~0.6% where they differ it is stale -- it never matches the rank implied by the published fpi, while rank always does. Prefer rank.
projectedw	double	Projected overall W-L, accounting for results to date and FPI-based projections for remaining scheduled games (and potential conference championship games). May not sum to a whole number because of differing number of games played in each simulation.
projectedl	double	Projected overall Losses, accounting for results to date and FPI-based projections for remaining scheduled games (including potential conference championship games). May not sum to a whole number because of differing number of games played in each simulation.
projectedt	character	Projected ties. Always null -- college football abolished ties in 1996, and ESPN emits the key beside projectedw/projectedl without ever populating it. Retained so the column set matches the upstream payload.
projectedwpctrank	double	Rank among FBS teams by projected win percentage. ESPN publishes the rank without the underlying percentage; derive it from projectedw and projectedl.
probwinout	double	Percent of season simulations in which team won all remaining scheduled games as well as conference championship game (if applicable).
probwinconf	double	Percent of season simulations in which team won its conference, incorporating chance of getting to and winning conference championship game (if applicable). Accounts for shared conference titles in conferences that allow them.
sosremainingrank	double	Rank among all FBS teams of remaining schedule strength, from perspective of an average FBS team.
accomplishment	double	Reflects chance that an average Top 25 team would have team's record or better, given the schedule. On a 0 to 100 scale, where 100 is best.
accomplishmentrank	double	Strength of Record rank. Reflects chance that an average Top 25 team would have team's record or better, given the schedule.
adjwins	double	Team's Wins adjusted for chance an average FBS team would have team's record or better, given the schedule.
adjlosses	double	Team's Losses adjusted for chance an average FBS team would have team's record or better, given the schedule.
adjwinpctrank	double	Rank among FBS teams by adjusted win percentage. ESPN publishes the rank without the underlying percentage; derive it from adjwins and adjlosses. 0 is an unranked placeholder, not a rank -- it appears where the underlying value is null.
gamecontrol	double	Reflects chance that an average Top 25 team would control games from start to end the way this team did, given the schedule. On a 0 to 100 scale, where 100 is best.
gamecontrolrank	double	Game Control rank. Reflects chance that an average Top 25 team would control games from start to end the way this team did, given the schedule.
adjavgingamewp	double	Team's average in-game win probability adjusted for chance that an average FBS team would control games from start to end the way this team did, given the schedule.
adjavgingamewprank	double	Rank among FBS teams by adjavgingamewp (average in-game win probability adjusted for opponent). Null for most pre-2019 snapshots. 0 is an unranked placeholder, not a rank.
avgingamewp	double	Team's average in-game win probability across all plays of all games played, not adjusted for site or opponent.
avgingamewprank	double	Team's average in-game win probability rank adjusted for chance that an average FBS team would control games from start to end the way this team did, given the schedule.
avgsosrank	double	Rank among all FBS teams of games already played schedule strength, from perspective of an average Top 25 team.
topsosrank	double	Rank among all FBS teams of games already played schedule strength, from perspective of an top FBS team.
epaoffense	double	Offensive component of FPI. Offensive contribution to expected point margin vs average opponent on neutral field.
epadefense	double	Defensive component of FPI. Defensive contribution to expected point margin vs average opponent on neutral field.
epaspecialteams	double	Special teams component of FPI. Special teams contribution to expected point margin vs average opponent on neutral field.
probwindiv	double	Percent of season simulations in which team won its conference division, for those conferences that have divisions.
probmakeplayoffs	double	Chance to make the CFB Playoff, according to the Playoff Predictor.
probmaketitlegame	double	Chance to make the CFB Playoff National Championship game, according to the Playoff Predictor.
numwins	double	Actual wins to date at the time of the snapshot. Distinct from projectedw (full-season projection) and adjwins (opponent-adjusted).
numlosses	double	Actual losses to date at the time of the snapshot. Distinct from projectedl (full-season projection) and adjlosses (opponent-adjusted).
numties	double	Actual ties to date. Never nonzero -- college football abolished ties in 1996; the column is null or 0 in every published row.
probwintitle	double	Chance to win the CFB Playoff National Championship, according to the Playoff Predictor.
rankchange7days	double	FPI Rank change from previous week.
prob6wins	double	Percent of season simulations in which a team won at least 6 games (typically bowl-eligible).
rank	double	FPI rank among FBS teams for this snapshot (1 = best). Prefer this over fpirank: the two agree on 99.4% of rows, and on the ~0.6% where they differ, rank is always the one consistent with the published fpi value.
offefficiency	double	Offensive efficiency on 0-100 scale; based on offense's contribution to scoring margin on per-play basis, adjusted for strength of opposing defenses faced.
offefficiencyrank	double	Team's offensive efficiency rank among all FBS teams.
defefficiency	double	Defensive efficiency on 0-100 scale; based on defense's contribution to scoring margin on per-play basis, adjusted for strength of opposing offenses faced.
defefficiencyrank	double	Team's defensive efficiency rank among all FBS teams.
stefficiency	double	Special teams efficiency on 0-100 scale; based on special teams' contribution to scoring margin on per-play basis, adjusted for strength of opposing special teams faced.
stefficiencyrank	double	Team's special teams efficiency rank among all FBS teams.
totefficiency	double	Net efficiency on 0-100 scale; incorporates offense, defense and special teams efficiencies into a single schedule-adjusted measure of per-play efficiency.
totefficiencyrank	double	Team's overall efficiency rank among all FBS teams.
snapshot_is_contemporaneous	logical	True when the snapshot was computed inside its own season's window (August of the season year through February of the next), i.e. it is a live weekly run rather than a retrospective backfill. False for every row before 2015, which ESPN computed in one pass afterwards. A retrospective row is a reconstruction, not an as-of-week rating.