The Overall Performance Index is a data-based model built by Ben Wright. It combines results-based metrics with underlying performance indicators from American Soccer Analysis. Scores are uncapped and grow naturally as the season progresses.
Points per game across the season, weighted by recency — a result from week 1 carries about 15% as much weight as a result from this week by season's end. Old form fades instead of sitting at full value all year. MLS regular season only.
ASA metric measuring how every on-ball action shifts a team's probability of scoring. Counters luck-based noise in raw results.
Points from the last 5 games divided by 5. A secondary recency signal on top of the decay already built into season PPG — extra emphasis on the very latest results.
Cumulative GF minus GA. A reliable indicator of team quality across the season.
Each week, every team's OPI score is locked and used to measure the quality of opponents faced so far this season.
Not part of the OPI score itself — a separate look-ahead stat showing the average current OPI of a team's not-yet-played opponents. A high number means a tough run-in; a low number means an easier path.
xGF minus xGA via ASA. Shows quality of chances created and conceded — predictive over large samples.
Deviation from 10-year MLS averages (1.75 home, 1.00 away). Rewards teams that outperform location expectations.
The change in a team's OPI score since their last match. A positive delta means the team's overall score improved — a negative delta means it dropped.
A separate indicator showing whether a team's recent form is running above or below their season average. Compares points-per-game over the last 5 matches against their full-season PPG. ↑ hot, ↗ improving, → steady, ↘ cooling, ↓ cold.
Tiers are assigned algorithmically based on each team's OPI score relative to the league mean and standard deviation — they shift week to week as the season evolves.
We're always looking for ways to make this table better. If you notice an issue that needs to be fixed, or have an idea for how to improve it, send us an email at sixonefivesoccer@gmail.com.
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