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.
Actual results weighted most heavily. MLS regular season only — no Concacaf, Open Cup, or Leagues Cup.
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 team on a poor run will drop even with a strong earlier record.
Cumulative GF minus GA. A reliable indicator of team quality across the season.
Average OPI score of opponents faced. A win over a top team counts more than a win over a struggling one.
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.