Team and player set-piece ratings

wa_setpieces.core.rating turns a set-piece report into a single 0-100 “how good” score: each metric (success rate, added value, retention) is z-scored against the sample it’s given – 50 is that sample’s own average, not a universal benchmark, so always rate against a full season/competition, not one match (see the module docstring).

Player ratings split into a delivery score (taker quality) and a finishing score (shooter quality), since a player can be good at one and never do the other.

from pathlib import Path

from wa_setpieces import load_matches
from wa_setpieces.core.rating import player_rating, team_rating
from wa_setpieces.core.report import corner_report
from wa_setpieces.core.xt import XTModel
from wa_setpieces.viz.plots import plot_rating_benchmark

try:
    _here = Path(__file__).resolve().parent
except NameError:
    _here = Path.cwd()
DATA = _here.parent / "tests" / "data" / "sample_match.json"

events = load_matches(DATA)
model = XTModel.fit(events, x_bins=8, y_bins=6)

Team rating – benchmarked against the (two) teams in this sample match; a real report is only meaningful over a full season:

report = corner_report(events, model=model)
team_rated = team_rating(report)
team_rated[["contestantId", "success_rate", "avg_added_value", "rating"]]

	contestantId	success_rate	avg_added_value	rating
0	cxb4hqite921i36gwrezdts7c	0.500	-0.0096	53.0
1	f2yd0yzt0om6qhks9gbowu1d6	0.143	0.0000	47.0

As a benchmark chart:

fig, ax = plot_rating_benchmark(team_rated, title="Corner rating — by team")

Player rating – delivery score and finishing score, merged:

player_rated = player_rating(events, "corner", model, min_deliveries=1, min_shots=1)
player_rated[["playerName", "delivery_score", "finishing_score", "rating"]]

	playerName	delivery_score	finishing_score	rating
0	S. Vasquez	60.6	NaN	60.6
1	V. Burgoa	48.2	NaN	48.2
2	P. Velasco	48.2	NaN	48.2
3	D. Armas	48.2	NaN	48.2
4	R. Jaramillo	48.2	NaN	48.2
5	A. Tobar	46.6	NaN	46.6

fig, ax = plot_rating_benchmark(
    player_rated, label_col="playerName", title="Corner rating — by player"
)